If you are using actual images, you could just have an 'up' image, and 'down' image, one for selected, the other for not. I havent ran HCE, so I totally lost as to its UI.
there are some good tutorials over at xfactordev.net and some of the guys in #xfactor on efnet are wonderful resources (just ignore kl0wn

)
there are also several open source games that you might want to look at.