Fun: Make each tab have its own color theme

App/Titlebar and URL Bar/TitlebarView.swift

@@ -51,6 +51,10 @@ class TitlebarView: UIView
             titleLabelView.attributedText = NSAttributedString(string: appName, attributes: titleAttributes)
         }
     }
+    
+    func setColorTheme(_ colorTheme: [UIColor]) {
+        backgroundView.colors = colorTheme
+    }
         
     override func layoutSubviews() {
         super.layoutSubviews()