ClientTheme: Fix startup freeze & clean-up plugin (#3413)

Co-authored-by: Vendicated <vendicated@riseup.net>

src/plugins/clientTheme/README.md

@@ -1,4 +1,4 @@
-# Classic Client Theme
+# Client Theme
 
 Revival of the old client theme experiment (The one that came before the sucky one that we actually got)
 

src/plugins/clientTheme/clientTheme.css

@@ -19,16 +19,8 @@
     border: thin solid var(--background-modifier-accent) !important;
 }
 
-.vc-clientTheme-warning-text {
+.vc-clientTheme-buttons-container {
-    color: var(--text-danger);
+    margin-top: 16px;
-}
-
-.vc-clientTheme-contrast-warning {
-    background-color: var(--background-primary);
-    padding: 0.5rem;
-    border-radius: .5rem;
     display: flex;
-    flex-direction: row;
+    gap: 4px;
-    justify-content: space-between;
-    align-items: center;
 }

src/plugins/clientTheme/components/Settings.tsx

@@ -0,0 +1,104 @@
+/*
+ * Vencord, a Discord client mod
+ * Copyright (c) 2025 Vendicated and contributors
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+import { classNameFactory } from "@api/Styles";
+import { ErrorCard } from "@components/ErrorCard";
+import { Margins } from "@utils/margins";
+import { findByCodeLazy, findComponentByCodeLazy, findStoreLazy } from "@webpack";
+import { Button, Forms, ThemeStore, useStateFromStores } from "@webpack/common";
+
+import { settings } from "..";
+import { relativeLuminance } from "../utils/colorUtils";
+import { createOrUpdateThemeColorVars } from "../utils/styleUtils";
+
+const ColorPicker = findComponentByCodeLazy("#{intl::USER_SETTINGS_PROFILE_COLOR_SELECT_COLOR}", ".BACKGROUND_PRIMARY)");
+const saveClientTheme = findByCodeLazy('type:"UNSYNCED_USER_SETTINGS_UPDATE', '"system"===');
+const NitroThemeStore = findStoreLazy("ClientThemesBackgroundStore");
+
+const cl = classNameFactory("vc-clientTheme-");
+
+const colorPresets = [
+    "#1E1514", "#172019", "#13171B", "#1C1C28", "#402D2D",
+    "#3A483D", "#344242", "#313D4B", "#2D2F47", "#322B42",
+    "#3C2E42", "#422938", "#b6908f", "#bfa088", "#d3c77d",
+    "#86ac86", "#88aab3", "#8693b5", "#8a89ba", "#ad94bb",
+];
+
+function onPickColor(color: number) {
+    const hexColor = color.toString(16).padStart(6, "0");
+
+    settings.store.color = hexColor;
+    createOrUpdateThemeColorVars(hexColor);
+}
+
+function setDiscordTheme(theme: string) {
+    saveClientTheme({ theme });
+}
+
+export function ThemeSettingsComponent() {
+    const currentTheme = useStateFromStores([ThemeStore], () => ThemeStore.theme);
+    const isLightTheme = currentTheme === "light";
+    const oppositeTheme = isLightTheme ? "Dark" : "Light";
+
+    const nitroThemeEnabled = useStateFromStores([NitroThemeStore], () => NitroThemeStore.gradientPreset != null);
+
+    const selectedLuminance = relativeLuminance(settings.store.color);
+
+    let contrastWarning = false;
+    let fixableContrast = true;
+
+    if ((isLightTheme && selectedLuminance < 0.26) || !isLightTheme && selectedLuminance > 0.12) {
+        contrastWarning = true;
+    }
+
+    if (selectedLuminance < 0.26 && selectedLuminance > 0.12) {
+        fixableContrast = false;
+    }
+
+    // Light mode with values greater than 65 leads to background colors getting crushed together and poor text contrast for muted channels
+    if (isLightTheme && selectedLuminance > 0.65) {
+        contrastWarning = true;
+        fixableContrast = false;
+    }
+
+    return (
+        <div className={cl("settings")}>
+            <div className={cl("container")}>
+                <div className={cl("settings-labels")}>
+                    <Forms.FormTitle tag="h3">Theme Color</Forms.FormTitle>
+                    <Forms.FormText>Add a color to your Discord client theme</Forms.FormText>
+                </div>
+                <ColorPicker
+                    color={parseInt(settings.store.color, 16)}
+                    onChange={onPickColor}
+                    showEyeDropper={false}
+                    suggestedColors={colorPresets}
+                />
+            </div>
+            {(contrastWarning || nitroThemeEnabled) && (<>
+                <ErrorCard className={Margins.top8}>
+                    <Forms.FormTitle tag="h2">Your theme won't look good!</Forms.FormTitle>
+
+                    {contrastWarning && <Forms.FormText>{">"} Selected color won't contrast well with text</Forms.FormText>}
+                    {nitroThemeEnabled && <Forms.FormText>{">"} Nitro themes aren't supported</Forms.FormText>}
+
+                    <div className={cl("buttons-container")}>
+                        {(contrastWarning && fixableContrast) && <Button onClick={() => setDiscordTheme(oppositeTheme)} color={Button.Colors.RED}>Switch to {oppositeTheme} mode</Button>}
+                        {(nitroThemeEnabled) && <Button onClick={() => setDiscordTheme(currentTheme)} color={Button.Colors.RED}>Disable Nitro Theme</Button>}
+                    </div>
+                </ErrorCard>
+            </>)}
+        </div>
+    );
+}
+
+export function ResetThemeColorComponent() {
+    return (
+        <Button onClick={() => onPickColor(0x313338)}>
+            Reset Theme Color
+        </Button>
+    );
+}

src/plugins/clientTheme/index.tsx

@@ -7,104 +7,21 @@
 import "./clientTheme.css";
 
 import { definePluginSettings } from "@api/Settings";
-import { classNameFactory } from "@api/Styles";
 import { Devs } from "@utils/constants";
-import { Margins } from "@utils/margins";
-import { classes } from "@utils/misc";
 import definePlugin, { OptionType, StartAt } from "@utils/types";
-import { findByCodeLazy, findComponentByCodeLazy, findStoreLazy } from "@webpack";
-import { Button, Forms, ThemeStore, useStateFromStores } from "@webpack/common";
 
-const cl = classNameFactory("vc-clientTheme-");
+import { ResetThemeColorComponent, ThemeSettingsComponent } from "./components/Settings";
+import { disableClientTheme, startClientTheme } from "./utils/styleUtils";
 
-const ColorPicker = findComponentByCodeLazy("#{intl::USER_SETTINGS_PROFILE_COLOR_SELECT_COLOR}", ".BACKGROUND_PRIMARY)");
+export const settings = definePluginSettings({
-
-const colorPresets = [
-    "#1E1514", "#172019", "#13171B", "#1C1C28", "#402D2D",
-    "#3A483D", "#344242", "#313D4B", "#2D2F47", "#322B42",
-    "#3C2E42", "#422938", "#b6908f", "#bfa088", "#d3c77d",
-    "#86ac86", "#88aab3", "#8693b5", "#8a89ba", "#ad94bb",
-];
-
-function onPickColor(color: number) {
-    const hexColor = color.toString(16).padStart(6, "0");
-
-    settings.store.color = hexColor;
-    updateColorVars(hexColor);
-}
-
-const saveClientTheme = findByCodeLazy('type:"UNSYNCED_USER_SETTINGS_UPDATE', '"system"===');
-
-function setTheme(theme: string) {
-    saveClientTheme({ theme });
-}
-
-const NitroThemeStore = findStoreLazy("ClientThemesBackgroundStore");
-
-function ThemeSettings() {
-    const theme = useStateFromStores([ThemeStore], () => ThemeStore.theme);
-    const isLightTheme = theme === "light";
-    const oppositeTheme = isLightTheme ? "dark" : "light";
-
-    const nitroTheme = useStateFromStores([NitroThemeStore], () => NitroThemeStore.gradientPreset);
-    const nitroThemeEnabled = nitroTheme !== undefined;
-
-    const selectedLuminance = relativeLuminance(settings.store.color);
-
-    let contrastWarning = false, fixableContrast = true;
-    if ((isLightTheme && selectedLuminance < 0.26) || !isLightTheme && selectedLuminance > 0.12)
-        contrastWarning = true;
-    if (selectedLuminance < 0.26 && selectedLuminance > 0.12)
-        fixableContrast = false;
-    // light mode with values greater than 65 leads to background colors getting crushed together and poor text contrast for muted channels
-    if (isLightTheme && selectedLuminance > 0.65) {
-        contrastWarning = true;
-        fixableContrast = false;
-    }
-
-    return (
-        <div className={cl("settings")}>
-            <div className={cl("container")}>
-                <div className={cl("settings-labels")}>
-                    <Forms.FormTitle tag="h3">Theme Color</Forms.FormTitle>
-                    <Forms.FormText>Add a color to your Discord client theme</Forms.FormText>
-                </div>
-                <ColorPicker
-                    color={parseInt(settings.store.color, 16)}
-                    onChange={onPickColor}
-                    showEyeDropper={false}
-                    suggestedColors={colorPresets}
-                />
-            </div>
-            {(contrastWarning || nitroThemeEnabled) && (<>
-                <Forms.FormDivider className={classes(Margins.top8, Margins.bottom8)} />
-                <div className={`client-theme-contrast-warning ${contrastWarning ? (isLightTheme ? "theme-dark" : "theme-light") : ""}`}>
-                    <div className={cl("warning")}>
-                        <Forms.FormText className={cl("warning-text")}>Warning, your theme won't look good:</Forms.FormText>
-                        {contrastWarning && <Forms.FormText className={cl("warning-text")}>Selected color won't contrast well with text</Forms.FormText>}
-                        {nitroThemeEnabled && <Forms.FormText className={cl("warning-text")}>Nitro themes aren't supported</Forms.FormText>}
-                    </div>
-                    {(contrastWarning && fixableContrast) && <Button onClick={() => setTheme(oppositeTheme)} color={Button.Colors.RED}>Switch to {oppositeTheme} mode</Button>}
-                    {(nitroThemeEnabled) && <Button onClick={() => setTheme(theme)} color={Button.Colors.RED}>Disable Nitro Theme</Button>}
-                </div>
-            </>)}
-        </div>
-    );
-}
-
-const settings = definePluginSettings({
     color: {
         type: OptionType.COMPONENT,
         default: "313338",
-        component: ThemeSettings
+        component: ThemeSettingsComponent
     },
     resetColor: {
         type: OptionType.COMPONENT,
-        component: () => (
+        component: ResetThemeColorComponent
-            <Button onClick={() => onPickColor(0x313338)}>
-                Reset Theme Color
-            </Button>
-        )
     }
 });
 
@@ -115,185 +32,6 @@ export default definePlugin({
     settings,
 
     startAt: StartAt.DOMContentLoaded,
-    async start() {
+    start: () => startClientTheme(settings.store.color),
-        updateColorVars(settings.store.color);
+    stop: disableClientTheme
-
-        const styles = await getStyles();
-        generateColorOffsets(styles);
-        generateLightModeFixes(styles);
-    },
-
-    stop() {
-        document.getElementById("clientThemeVars")?.remove();
-        document.getElementById("clientThemeOffsets")?.remove();
-        document.getElementById("clientThemeLightModeFixes")?.remove();
-    }
 });
-
-const visualRefreshVariableRegex = /(--neutral-\d{1,3}-hsl):.*?(\S*)%;/g;
-const oldVariableRegex = /(--primary-\d{3}-hsl):.*?(\S*)%;/g;
-const lightVariableRegex = /^--primary-[1-5]\d{2}-hsl/g;
-const darkVariableRegex = /^--primary-[5-9]\d{2}-hsl/g;
-
-// generates variables per theme by:
-// - matching regex (so we can limit what variables are included in light/dark theme, otherwise text becomes unreadable)
-// - offset from specified center (light/dark theme get different offsets because light uses 100 for background-primary, while dark uses 600)
-function genThemeSpecificOffsets(variableLightness: Record<string, number>, regex: RegExp | null, centerVariable: string): string {
-    return Object.entries(variableLightness).filter(([key]) => regex == null || key.search(regex) > -1)
-        .map(([key, lightness]) => {
-            const lightnessOffset = lightness - variableLightness[centerVariable];
-            const plusOrMinus = lightnessOffset >= 0 ? "+" : "-";
-            return `${key}: var(--theme-h) var(--theme-s) calc(var(--theme-l) ${plusOrMinus} ${Math.abs(lightnessOffset).toFixed(2)}%);`;
-        })
-        .join("\n");
-}
-
-function generateColorOffsets(styles) {
-    const oldVariableLightness = {} as Record<string, number>;
-    const visualRefreshVariableLightness = {} as Record<string, number>;
-
-    // Get lightness values of --primary variables
-    for (const [, variable, lightness] of styles.matchAll(oldVariableRegex)) {
-        oldVariableLightness[variable] = parseFloat(lightness);
-    }
-
-    for (const [, variable, lightness] of styles.matchAll(visualRefreshVariableRegex)) {
-        visualRefreshVariableLightness[variable] = parseFloat(lightness);
-    }
-
-    createStyleSheet("clientThemeOffsets", [
-        `.theme-light {\n ${genThemeSpecificOffsets(oldVariableLightness, lightVariableRegex, "--primary-345-hsl")} \n}`,
-        `.theme-dark {\n ${genThemeSpecificOffsets(oldVariableLightness, darkVariableRegex, "--primary-600-hsl")} \n}`,
-        `.visual-refresh.theme-light {\n ${genThemeSpecificOffsets(visualRefreshVariableLightness, null, "--neutral-2-hsl")} \n}`,
-        `.visual-refresh.theme-dark {\n ${genThemeSpecificOffsets(visualRefreshVariableLightness, null, "--neutral-69-hsl")} \n}`,
-    ].join("\n\n"));
-}
-
-function generateLightModeFixes(styles: string) {
-    const groupLightUsesW500Regex = /\.theme-light[^{]*\{[^}]*var\(--white-500\)[^}]*}/gm;
-    // get light capturing groups that mention --white-500
-    const relevantStyles = [...styles.matchAll(groupLightUsesW500Regex)].flat();
-
-    const groupBackgroundRegex = /^([^{]*)\{background:var\(--white-500\)/m;
-    const groupBackgroundColorRegex = /^([^{]*)\{background-color:var\(--white-500\)/m;
-    // find all capturing groups that assign background or background-color directly to w500
-    const backgroundGroups = mapReject(relevantStyles, entry => captureOne(entry, groupBackgroundRegex)).join(",\n");
-    const backgroundColorGroups = mapReject(relevantStyles, entry => captureOne(entry, groupBackgroundColorRegex)).join(",\n");
-    // create css to reassign them to --primary-100
-    const reassignBackgrounds = `${backgroundGroups} {\n background: var(--primary-100) \n}`;
-    const reassignBackgroundColors = `${backgroundColorGroups} {\n background-color: var(--primary-100) \n}`;
-
-    const groupBgVarRegex = /\.theme-light\{([^}]*--[^:}]*(?:background|bg)[^:}]*:var\(--white-500\)[^}]*)\}/m;
-    const bgVarRegex = /^(--[^:]*(?:background|bg)[^:]*):var\(--white-500\)/m;
-    // get all global variables used for backgrounds
-    const lightVars = mapReject(relevantStyles, style => captureOne(style, groupBgVarRegex)) // get the insides of capture groups that have at least one background var with w500
-        .map(str => str.split(";")).flat(); // captureGroupInsides[] -> cssRule[]
-    const lightBgVars = mapReject(lightVars, variable => captureOne(variable, bgVarRegex)); // remove vars that aren't for backgrounds or w500
-    // create css to reassign every var
-    const reassignVariables = `.theme-light {\n ${lightBgVars.map(variable => `${variable}: var(--primary-100);`).join("\n")} \n}`;
-
-    createStyleSheet("clientThemeLightModeFixes", [
-        reassignBackgrounds,
-        reassignBackgroundColors,
-        reassignVariables,
-    ].join("\n\n"));
-}
-
-function captureOne(str, regex) {
-    const result = str.match(regex);
-    return (result === null) ? null : result[1];
-}
-
-function mapReject(arr, mapFunc) {
-    return arr.map(mapFunc).filter(Boolean);
-}
-
-function updateColorVars(color: string) {
-    const { hue, saturation, lightness } = hexToHSL(color);
-
-    let style = document.getElementById("clientThemeVars");
-    if (!style)
-        style = createStyleSheet("clientThemeVars");
-
-    style.textContent = `:root {
-        --theme-h: ${hue};
-        --theme-s: ${saturation}%;
-        --theme-l: ${lightness}%;
-    }`;
-}
-
-function createStyleSheet(id, content = "") {
-    const style = document.createElement("style");
-    style.setAttribute("id", id);
-    style.textContent = content.split("\n").map(line => line.trim()).join("\n");
-    document.body.appendChild(style);
-    return style;
-}
-
-// returns all of discord's native styles in a single string
-async function getStyles(): Promise<string> {
-    let out = "";
-    const styleLinkNodes = document.querySelectorAll('link[rel="stylesheet"]');
-    for (const styleLinkNode of styleLinkNodes) {
-        const cssLink = styleLinkNode.getAttribute("href");
-        if (!cssLink) continue;
-
-        const res = await fetch(cssLink);
-        out += await res.text();
-    }
-    return out;
-}
-
-// https://css-tricks.com/converting-color-spaces-in-javascript/
-function hexToHSL(hexCode: string) {
-    // Hex => RGB normalized to 0-1
-    const r = parseInt(hexCode.substring(0, 2), 16) / 255;
-    const g = parseInt(hexCode.substring(2, 4), 16) / 255;
-    const b = parseInt(hexCode.substring(4, 6), 16) / 255;
-
-    // RGB => HSL
-    const cMax = Math.max(r, g, b);
-    const cMin = Math.min(r, g, b);
-    const delta = cMax - cMin;
-
-    let hue: number, saturation: number, lightness: number;
-
-    lightness = (cMax + cMin) / 2;
-
-    if (delta === 0) {
-        // If r=g=b then the only thing that matters is lightness
-        hue = 0;
-        saturation = 0;
-    } else {
-        // Magic
-        saturation = delta / (1 - Math.abs(2 * lightness - 1));
-
-        if (cMax === r)
-            hue = ((g - b) / delta) % 6;
-        else if (cMax === g)
-            hue = (b - r) / delta + 2;
-        else
-            hue = (r - g) / delta + 4;
-        hue *= 60;
-        if (hue < 0)
-            hue += 360;
-    }
-
-    // Move saturation and lightness from 0-1 to 0-100
-    saturation *= 100;
-    lightness *= 100;
-
-    return { hue, saturation, lightness };
-}
-
-// https://www.w3.org/TR/WCAG21/#dfn-relative-luminance
-function relativeLuminance(hexCode: string) {
-    const normalize = (x: number) =>
-        x <= 0.03928 ? x / 12.92 : ((x + 0.055) / 1.055) ** 2.4;
-
-    const r = normalize(parseInt(hexCode.substring(0, 2), 16) / 255);
-    const g = normalize(parseInt(hexCode.substring(2, 4), 16) / 255);
-    const b = normalize(parseInt(hexCode.substring(4, 6), 16) / 255);
-
-    return r * 0.2126 + g * 0.7152 + b * 0.0722;
-}

src/plugins/clientTheme/utils/colorUtils.ts

@@ -0,0 +1,65 @@
+/*
+ * Vencord, a Discord client mod
+ * Copyright (c) 2025 Vendicated and contributors
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+// https://css-tricks.com/converting-color-spaces-in-javascript/
+export function hexToHSL(hexCode: string) {
+    // Hex => RGB normalized to 0-1
+    const r = parseInt(hexCode.substring(0, 2), 16) / 255;
+    const g = parseInt(hexCode.substring(2, 4), 16) / 255;
+    const b = parseInt(hexCode.substring(4, 6), 16) / 255;
+
+    // RGB => HSL
+    const cMax = Math.max(r, g, b);
+    const cMin = Math.min(r, g, b);
+    const delta = cMax - cMin;
+
+    let hue: number;
+    let saturation: number;
+    let lightness: number;
+
+    lightness = (cMax + cMin) / 2;
+
+    if (delta === 0) {
+        // If r=g=b then the only thing that matters is lightness
+        hue = 0;
+        saturation = 0;
+    } else {
+        // Magic
+        saturation = delta / (1 - Math.abs(2 * lightness - 1));
+
+        if (cMax === r) {
+            hue = ((g - b) / delta) % 6;
+        } else if (cMax === g) {
+            hue = (b - r) / delta + 2;
+        } else {
+            hue = (r - g) / delta + 4;
+        }
+
+        hue *= 60;
+        if (hue < 0) {
+            hue += 360;
+        }
+    }
+
+    // Move saturation and lightness from 0-1 to 0-100
+    saturation *= 100;
+    lightness *= 100;
+
+    return { hue, saturation, lightness };
+}
+
+// https://www.w3.org/TR/WCAG21/#dfn-relative-luminance
+export function relativeLuminance(hexCode: string) {
+    const normalize = (x: number) => (
+        x <= 0.03928 ? x / 12.92 : ((x + 0.055) / 1.055) ** 2.4
+    );
+
+    const r = normalize(parseInt(hexCode.substring(0, 2), 16) / 255);
+    const g = normalize(parseInt(hexCode.substring(2, 4), 16) / 255);
+    const b = normalize(parseInt(hexCode.substring(4, 6), 16) / 255);
+
+    return r * 0.2126 + g * 0.7152 + b * 0.0722;
+}

src/plugins/clientTheme/utils/styleUtils.ts

@@ -0,0 +1,90 @@
+/*
+ * Vencord, a Discord client mod
+ * Copyright (c) 2025 Vendicated and contributors
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+import { hexToHSL } from "./colorUtils";
+
+const VARS_STYLE_ID = "vc-clientTheme-vars";
+const OVERRIDES_STYLE_ID = "vc-clientTheme-overrides";
+
+export function createOrUpdateThemeColorVars(color: string) {
+    const { hue, saturation, lightness } = hexToHSL(color);
+
+    createOrUpdateStyle(VARS_STYLE_ID, `:root {
+        --theme-h: ${hue};
+        --theme-s: ${saturation}%;
+        --theme-l: ${lightness}%;
+    }`);
+}
+
+export async function startClientTheme(color: string) {
+    createOrUpdateThemeColorVars(color);
+    createColorsOverrides(await getDiscordStyles());
+}
+
+export function disableClientTheme() {
+    document.getElementById(VARS_STYLE_ID)?.remove();
+    document.getElementById(OVERRIDES_STYLE_ID)?.remove();
+}
+
+function getOrCreateStyle(styleId: string) {
+    const existingStyle = document.getElementById(styleId);
+    if (existingStyle) {
+        return existingStyle as HTMLStyleElement;
+    }
+
+    const newStyle = document.createElement("style");
+    newStyle.id = styleId;
+
+    return document.head.appendChild(newStyle);
+}
+
+function createOrUpdateStyle(styleId: string, css: string) {
+    const style = getOrCreateStyle(styleId);
+    style.textContent = css;
+}
+
+/**
+ * @returns A string containing all the CSS styles from the Discord client.
+ */
+async function getDiscordStyles(): Promise<string> {
+    const styleLinkNodes = document.querySelectorAll<HTMLLinkElement>('link[rel="stylesheet"]');
+
+    const cssTexts = await Promise.all(Array.from(styleLinkNodes, async node => {
+        if (!node.href)
+            return null;
+
+        return fetch(node.href).then(res => res.text());
+    }));
+
+    return cssTexts.filter(Boolean).join("\n");
+}
+
+const VISUAL_REFRESH_COLORS_VARIABLES_REGEX = /(--neutral-\d{1,3}?-hsl):.+?([\d.]+?)%;/g;
+
+function createColorsOverrides(styles: string) {
+    const visualRefreshColorsLightness = {} as Record<string, number>;
+
+    for (const [, colorVariableName, lightness] of styles.matchAll(VISUAL_REFRESH_COLORS_VARIABLES_REGEX)) {
+        visualRefreshColorsLightness[colorVariableName] = parseFloat(lightness);
+    }
+
+    const lightThemeBaseLightness = visualRefreshColorsLightness["--neutral-2-hsl"];
+    const darkThemeBaseLightness = visualRefreshColorsLightness["--neutral-69-hsl"];
+
+    createOrUpdateStyle(OVERRIDES_STYLE_ID, [
+        `.visual-refresh.theme-light {\n ${generateNewColorVars(visualRefreshColorsLightness, lightThemeBaseLightness)} \n}`,
+        `.visual-refresh.theme-dark {\n ${generateNewColorVars(visualRefreshColorsLightness, darkThemeBaseLightness)} \n}`,
+    ].join("\n\n"));
+}
+
+function generateNewColorVars(colorsLightess: Record<string, number>, baseLightness: number) {
+    return Object.entries(colorsLightess).map(([colorVariableName, lightness]) => {
+        const lightnessOffset = lightness - baseLightness;
+        const plusOrMinus = lightnessOffset >= 0 ? "+" : "-";
+
+        return `${colorVariableName}: var(--theme-h) var(--theme-s) calc(var(--theme-l) ${plusOrMinus} ${Math.abs(lightnessOffset).toFixed(2)}%);`;
+    }).join("\n");
+}