~buzzert/rossler.attix#8: Toolbar background does not change color when system changes dark mode

Redraw gradient views whenever trait collection changes

App/Common UI/GradientView.swift

@@ -69,4 +69,12 @@ class GradientView: UIImageView
             generatedImageSize = bounds.size
         }
     }
+    
+    override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
+        super.traitCollectionDidChange(previousTraitCollection)
+        
+        // Regenerate image
+        image = nil
+        setNeedsLayout()
+    }
 }