refactor: Remove color settings on look and feel as they are no longer used, b=no-bug, c=common, workspaces

src/zen/common/styles/zen-urlbar.css

@@ -10,7 +10,6 @@
 }
 
 :root[zen-single-toolbar='true'] {
-  --urlbar-container-padding: 4px;
   & #urlbar:not([breakout-extend='true']) {
     padding: 1px;
     --toolbarbutton-border-radius: 6px;
@@ -26,7 +25,7 @@
 
   --urlbar-margin-inline: 5px;
   --urlbar-container-padding: 5px;
-  :root[zen-single-toolbar='true'] {
+  :root[zen-single-toolbar='true'] & {
     --urlbar-container-padding: 4px;
   }
 }

src/zen/common/zenThemeModifier.js

@@ -95,11 +95,6 @@ var ZenThemeModifier = {
   updateAccentColor() {
     const accentColor = Services.prefs.getStringPref('zen.theme.accent-color');
     document.documentElement.style.setProperty('--zen-primary-color', accentColor);
-    // Notify the page that the accent color has changed, only if a function
-    // handler is defined.
-    if (typeof window.zenPageAccentColorChanged === 'function') {
-      window.zenPageAccentColorChanged(accentColor);
-    }
   },
 };
 

src/zen/workspaces/ZenGradientGenerator.mjs

@@ -39,14 +39,6 @@
         document.getElementById('PanelUI-zen-gradient-generator-custom-list')
       );
 
-      XPCOMUtils.defineLazyPreferenceGetter(
-        this,
-        'allowWorkspaceColors',
-        'zen.theme.color-prefs.use-workspace-colors',
-        true,
-        this.onDarkModeChange.bind(this)
-      );
-
       this.panel.addEventListener('popupshowing', this.handlePanelOpen.bind(this));
       this.panel.addEventListener('popuphidden', this.handlePanelClose.bind(this));
       this.panel.addEventListener('command', this.handlePanelCommand.bind(this));