Index: backends/graphics/opengl/opengl-graphics.cpp
===================================================================
--- backends/graphics/opengl/opengl-graphics.cpp	(revision 3d0f255)
+++ backends/graphics/opengl/opengl-graphics.cpp	(working copy)
@@ -1139,7 +1139,8 @@
 	} else
 		_gameTexture->refresh();
 
-	_overlayFormat = Graphics::PixelFormat(2, 5, 5, 5, 1, 11, 6, 1, 0);
+//	_overlayFormat = Graphics::PixelFormat(2, 5, 5, 5, 1, 11, 6, 1, 0);
+	_overlayFormat = Graphics::PixelFormat(2, 4, 4, 4, 4, 12, 8, 4, 0);
 
 	if (!_overlayTexture) {
 		byte bpp;