Fixed headless screenshot text color.

TODO/_current.md

@@ -1,6 +1,3 @@
-* Window example headless screenshot does not use the color scheme?
-    - Test older commit.
-
 # Documentation
 
 * Add build dependencies for each operating system on the main `README.md`.

examples/window.rs

@@ -207,8 +207,10 @@ fn screenshot() -> impl UiNode {
                 enabled.set(false);
                 
                 tracing::info!("taking `screenshot.png` using a new headless window ..");
+                let parent = WINDOW.id();
                 WINDOWS.open_headless(async_clmv!(enabled, {
                     Window! {
+                        parent;
                         size = (500, 400);
                         background_color = web_colors::DARK_GREEN;
                         font_size = 72;