Opacity compositing

examples/reactive_layout_demo/src/main.rs

@@ -101,6 +101,7 @@ async fn run_demo() -> Result<(), Box<dyn Error>> {
                 window.surface_target(),
                 initial_size.width as u32,
                 initial_size.height as u32,
+                ruin_ui::Color::rgb(0x08, 0x0C, 0x14),
             )
             .expect("wgpu renderer should initialize");
             let state = Rc::new(RefCell::new(WorkerState {

examples/wayland_wgpu_demo/src/main.rs

@@ -36,6 +36,7 @@ fn main() -> Result<(), Box<dyn Error>> {
         window.surface_target(),
         scene.logical_size.width as u32,
         scene.logical_size.height as u32,
+        ruin_ui::Color::rgb(0x08, 0x0C, 0x14),
     )?;
 
     println!("Opening RUIN Wayland / wgpu demo window...");