My first attempt to paint my computer involved several coats of spray enamel. However, this soon chipped, scratched and generally looked shabby, so I came up with a better idea.

I bought two sheets of holographic blue paper from Paperchase (the coolest shop on earth) and stuck that to my computer, now I have a shiny holographic effect on my case which will not chip or peel and is quicker, easier and less messy that spray paint. Also if you get bored of it you can easily peel it off and do something else.