This is a nice little video, if you are struggling to get good colour fill.
[video=youtube;Rxep2dy4hWs]http://www.youtube.com/watch?v=Rxep2dy4hWs[/video]

[video=youtube;Rxep2dy4hWs]http://www.youtube.com/watch?v=Rxep2dy4hWs[/video]