@Marle: since this is far off-topic, I'm not going to post about it here - but if you like, I could explain a bit about the basics of how Copperlists work sometime? They're not as complicated as you might think - especially if all you're interested in is changing colours on a screen that doesn't vertically scroll.
There's actually quite a bit of info on them both on this board and other places on the net as well, so you might not even need my help