Remove appearance from Handle

... and pass it directly to `Renderer::draw` instead.

graphics/src/layer/image.rs

@@ -1,4 +1,5 @@
-use crate::Rectangle;
+use crate::{Color, Rectangle};
+
 use iced_native::{image, svg};
 
 /// A raster or vector image.
@@ -17,6 +18,9 @@ pub enum Image {
         /// The handle of a vector image.
         handle: svg::Handle,
 
+        /// The [`Color`] filter
+        color: Option<Color>,
+
         /// The bounds of the image.
         bounds: Rectangle,
     },