diff --git a/example/Main.savi b/example/Main.savi
index ce86a1e..dcc5830 100644
--- a/example/Main.savi
+++ b/example/Main.savi
@@ -16,6 +16,9 @@
     GL.clear(I32[0x00004000])
     GL.clear_color(@r, 0.0, F32[1.0] - @r, 0.5)
 
+    GL.color4f(0.5, 0.5, 0.5, 0.5)
+    GL.rectf(-0.75, @r, @r, -0.75)
+
     @r = @r + @inc
     if (@r > 1.0) (
       @r = 1.0