Add configurable theme accent overrides

README.md

@@ -182,6 +182,10 @@ artifacts.
     the fee at `0` to pass through every satoshi.
   - Populate `DEFAULT_RELAY_URLS_OVERRIDE` with WSS URLs to replace the bundled
     relay bootstrap list. Keep it empty to stick with the upstream defaults.
+  - Customize `THEME_ACCENT_OVERRIDES` with `#RRGGBB` hex strings when you want
+    light or dark mode to use different accent, accent-strong, or
+    accent-pressed colors. Leave the values `null` to inherit the defaults from
+    `css/tokens.css`.
 - **`js/config.js`**:
   - Re-exports `isDevMode` (derived from `IS_DEV_MODE`) for modules, publishes
     `window.__BITVID_DEV_MODE__`, and centralizes the global configuration

config/instance-config.js

@@ -125,6 +125,28 @@ export const DEFAULT_WHITELIST_MODE_ENABLED = true;
  */
 export const ALLOW_NSFW_CONTENT = false;
 
+/**
+ * Optional theme accent overrides for light and dark mode.
+ *
+ * Operators can provide hex color strings (e.g., `"#2563eb"`) to customize the
+ * accent tokens without editing the generated CSS bundle. Leave values as
+ * `null` to keep the upstream defaults defined in `css/tokens.css`. Each theme
+ * accepts overrides for the base accent color as well as the stronger and
+ * pressed states used for hover/active presentations.
+ */
+export const THEME_ACCENT_OVERRIDES = Object.freeze({
+  light: Object.freeze({
+    accent: null,
+    accentStrong: null,
+    accentPressed: null,
+  }),
+  dark: Object.freeze({
+    accent: null,
+    accentStrong: null,
+    accentPressed: null,
+  }),
+});
+
 /**
  * Nostr kind used when persisting watch history events.
  *

config/validate-config.js

@@ -7,6 +7,7 @@ import {
   ADMIN_SUPER_NPUB,
   PLATFORM_FEE_PERCENT,
   PLATFORM_LUD16_OVERRIDE,
+  THEME_ACCENT_OVERRIDES,
 } from "./instance-config.js";
 
 function assertSuperAdminConfigured(value) {
@@ -56,6 +57,50 @@ function getPlatformLud16Override(value) {
   return value.trim();
 }
 
+const ACCENT_HEX_PATTERN = /^#(?:[0-9a-fA-F]{6})$/;
+
+function assertThemeAccentOverrides(overrides) {
+  const source =
+    overrides && typeof overrides === "object"
+      ? overrides
+      : THEME_ACCENT_OVERRIDES;
+
+  const allowedThemes = new Set(["light", "dark"]);
+  const allowedTokens = ["accent", "accentStrong", "accentPressed"];
+
+  Object.entries(source).forEach(([theme, themeOverrides]) => {
+    if (!allowedThemes.has(theme) || themeOverrides == null) {
+      return;
+    }
+
+    if (typeof themeOverrides !== "object") {
+      throw new Error(
+        `THEME_ACCENT_OVERRIDES.${theme} must be an object with accent overrides.`
+      );
+    }
+
+    allowedTokens.forEach((token) => {
+      const rawValue = themeOverrides[token];
+      if (rawValue == null || rawValue === "") {
+        return;
+      }
+
+      if (typeof rawValue !== "string") {
+        throw new Error(
+          `THEME_ACCENT_OVERRIDES.${theme}.${token} must be a hex string (e.g., '#2563eb').`
+        );
+      }
+
+      const trimmed = rawValue.trim();
+      if (!ACCENT_HEX_PATTERN.test(trimmed)) {
+        throw new Error(
+          `THEME_ACCENT_OVERRIDES.${theme}.${token} must be a #RRGGBB hex color.`
+        );
+      }
+    });
+  });
+}
+
 function resolveConfig(overrides = {}) {
   return {
     adminSuperNpub:
@@ -64,6 +109,8 @@ function resolveConfig(overrides = {}) {
       overrides.PLATFORM_FEE_PERCENT ?? PLATFORM_FEE_PERCENT,
     platformLud16Override:
       overrides.PLATFORM_LUD16_OVERRIDE ?? PLATFORM_LUD16_OVERRIDE,
+    themeAccentOverrides:
+      overrides.THEME_ACCENT_OVERRIDES ?? THEME_ACCENT_OVERRIDES,
   };
 }
 
@@ -82,4 +129,6 @@ export function validateInstanceConfig(overrides) {
       "PLATFORM_FEE_PERCENT is positive but PLATFORM_LUD16_OVERRIDE is empty. Set PLATFORM_LUD16_OVERRIDE to the Lightning address that should receive the platform's split, or publish a lud16 value on the Super Admin profile so bitvid can route platform fees."
     );
   }
+
+  assertThemeAccentOverrides(config.themeAccentOverrides);
 }

js/themeController.js

@@ -1,3 +1,4 @@
+import { THEME_ACCENT_OVERRIDES } from "../config/instance-config.js";
 import { userLogger } from "./utils/logger.js";
 const STORAGE_KEY = "bitvid:theme";
 const FALLBACK_THEME = "dark";
@@ -13,6 +14,12 @@ const TOGGLE_SELECTORS = [
   "#themeToggle",
 ];
 
+const ACCENT_CSS_VARIABLES = Object.freeze({
+  accent: "--color-accent",
+  accentStrong: "--color-accent-strong",
+  accentPressed: "--color-accent-pressed",
+});
+
 const boundToggles = new WeakSet();
 const registeredToggles = new Set();
 let currentTheme = null;
@@ -70,6 +77,34 @@ const getRootElement = () => {
   return null;
 };
 
+const normalizeAccentValue = (value) =>
+  typeof value === "string" ? value.trim() : "";
+
+const applyAccentOverrides = (root, theme) => {
+  if (!root) {
+    return;
+  }
+
+  const themeOverrides =
+    THEME_ACCENT_OVERRIDES &&
+    typeof THEME_ACCENT_OVERRIDES === "object" &&
+    THEME_ACCENT_OVERRIDES[theme] &&
+    typeof THEME_ACCENT_OVERRIDES[theme] === "object"
+      ? THEME_ACCENT_OVERRIDES[theme]
+      : null;
+
+  Object.entries(ACCENT_CSS_VARIABLES).forEach(([token, cssVariable]) => {
+    const overrideValue = themeOverrides ? themeOverrides[token] : null;
+    const normalized = normalizeAccentValue(overrideValue);
+
+    if (normalized) {
+      root.style.setProperty(cssVariable, normalized);
+    } else {
+      root.style.removeProperty(cssVariable);
+    }
+  });
+};
+
 const updateThemeColorMeta = (theme) => {
   if (!isBrowser()) {
     return;
@@ -202,6 +237,7 @@ const applyTheme = (theme, { persist = true } = {}) => {
   const root = getRootElement();
   if (root) {
     root.dataset.theme = normalized;
+    applyAccentOverrides(root, normalized);
   }
 
   if (persist) {