trait ColrDrawSinkExt: DrawSink {
// Provided methods
fn fill_with_paint(&mut self, rect: &Rect, paint: AtlasPaint) { ... }
fn fill_solid(&mut self, rect: &Rect, color: AlphaColor<Srgb>) { ... }
fn fill_gradient(&mut self, rect: &Rect, gradient: Gradient) { ... }
}