diff --git a/src/ext/lib/Settings.ts b/src/ext/lib/Settings.ts
index c212ca8..128cbb5 100644
--- a/src/ext/lib/Settings.ts
+++ b/src/ext/lib/Settings.ts
@@ -323,8 +323,38 @@ class Settings {
     this.active = activeSettings;
   }
 
-  async setProp(prop, value) {
-    this.active[prop] = value;
+  /**
+   * Sets value of a prop at given path.
+   * @param propPath path to property we want to set. If prop path does not exist,
+   * this function will recursively create it. It is assumed that uninitialized properties
+   * are objects.
+   * @param value
+   */
+  async setProp(propPath: string | string[], value: any, options?: {forceReload?: boolean}, currentPath?: any) {
+    if (!Array.isArray(propPath)) {
+      propPath = propPath.split('.');
+    }
+
+    if (!currentPath) {
+      currentPath = this.active;
+    }
+
+    const currentProp = propPath.shift();
+
+    if (propPath.length) {
+      if (!currentPath[currentProp]) {
+        currentPath[currentProp] = {};
+      }
+      return this.setProp(propPath, value, options, currentPath[currentProp]);
+    } else {
+      currentPath[currentProp] = value;
+
+      if (options?.forceReload) {
+        return this.save();
+      } else {
+        return this.saveWithoutReload();
+      }
+    }
   }
 
   async save(options?) {
diff --git a/src/ext/lib/uwui/UI.js b/src/ext/lib/uwui/UI.js
index 25a6c52..d29e368 100644
--- a/src/ext/lib/uwui/UI.js
+++ b/src/ext/lib/uwui/UI.js
@@ -4,19 +4,10 @@ if (process.env.CHANNEL !== 'stable'){
   console.info("Loading: UI");
 }
 
-// When this was first coded in summer of 2024, websites using color-scheme other than 'normal'
-// displayed a black square over the video instead of a transparent iframe that we expect.
-// StackOverflow said that this was a workaround for the issue, and it worked just fine. However,
-// 6 months later, this fix is no longer working. Using csui-overlay-normal even on dark mode websites
-// appears to give us a transparent iframe, as we require.
-// Twitter is an example of a site using this color-scheme=dark property, so any changes to this code
-// should be tested on this video:
-// https://x.com/TheKhelIndia/status/1874019989357027511?mx=2
-// As of 1. 1. 2025, 'light' and 'dark' are commented out in order to force 'csui-overlay-normal' everywhere.
 const csuiVersions = {
   'normal': 'csui',         // csui-overlay-normal.html, maps to csui.html
-  // 'light': 'csui-light',    // csui-overlay-light.html,  maps to csui-light.html
-  // 'dark': 'csui-dark'       // csui-overlay-dark.html,   maps to csui-dark.html
+  'light': 'csui-light',    // csui-overlay-light.html,  maps to csui-light.html
+  'dark': 'csui-dark'       // csui-overlay-dark.html,   maps to csui-dark.html
 };
 
 const MAX_IFRAME_ERROR_COUNT = 5;
@@ -31,12 +22,6 @@ class UI {
     this.lastProbeResponseTs = null;
 
     this.isGlobal = uiConfig.isGlobal ?? false;
-    // TODO: at some point, UI should be different for global popup and in-player UI
-    const preferredScheme =  window.getComputedStyle( document.body ,null).getPropertyValue('color-scheme');
-    const csuiVersion = csuiVersions[preferredScheme] ?? csuiVersions.normal;
-
-    this.uiURI = chrome.runtime.getURL(`/csui/${csuiVersion}.html`);
-    this.extensionBase = chrome.runtime.getURL('').replace(/\/$/, "");
 
     this.eventBus = uiConfig.eventBus;
     this.disablePointerEvents = false;
@@ -48,6 +33,12 @@ class UI {
     this.iframeErrorCount = 0;
     this.iframeConfirmed = false;
     this.iframeRejected = false;
+
+    // TODO: at some point, UI should be different for global popup and in-player UI
+    this.csuiScheme = this.getCsuiScheme();
+    const csuiVersion = this.getCsuiVersion(this.csuiScheme.contentScheme);
+    this.uiURI = chrome.runtime.getURL(`/csui/${csuiVersion}.html`);
+    this.extensionBase = chrome.runtime.getURL('').replace(/\/$/, "");
   }
 
   async init() {
@@ -55,6 +46,30 @@ class UI {
     this.initMessaging();
   }
 
+
+  /**
+   * Returns color scheme we need to use.
+   *
+   * contentScheme is used to select the correct HTML template.
+   * iframeScheme gets applied to the iframe as style
+   * @returns {contentScheme: string, iframeScheme: string}
+   */
+  getCsuiScheme() {
+    return {
+      contentScheme: window.getComputedStyle( document.body ,null).getPropertyValue('color-scheme'),
+      iframeScheme: document.documentElement.style.colorScheme || document.body.style.colorScheme || undefined
+    };
+  }
+
+  /**
+   * Returns correct template for given preferredScheme parameter
+   * @param {*} preferredScheme
+   * @returns
+   */
+  getCsuiVersion(preferredScheme) {
+    return csuiVersions[preferredScheme] ?? csuiVersions.normal;
+  }
+
   initIframes() {
     const random = Math.round(Math.random() * 69420);
     const uwid = `uw-ultrawidify-${this.interfaceId}-root-${random}`
@@ -98,6 +113,12 @@ class UI {
     iframe.style.opacity = 0;
     iframe.style.backgroundColor = 'transparent !important';
 
+    // If colorScheme is defined via CSS on the HTML or BODY elements, then we need to also
+    // put a matching style to the iframe itself. Using the correct UI template is not enough.
+    if (this.csuiScheme.iframeScheme) {
+      iframe.style.colorScheme = this.csuiScheme.iframeScheme;
+    }
+
     /* so we have a problem: we want iframe to be clickthrough everywhere except
      * on our actual overlay. There's no nice way of doing that, so we need some
      * extra javascript to deal with this.
@@ -107,7 +128,6 @@ class UI {
      * that iframe also needs to run its own instance of onMouseMove.
      */
 
-
     // set uiIframe for handleMessage
     this.uiIframe = iframe;