Pandahome icon changing?

[Wazoo]

So I just downloaded and started using pandahome (not pandahome 2 beta) and a theme for it as well, and only the icons for the stock apps changed with the theme. I checked out the developer's guide for it but it wasn't very useful. How/where can I get icon pictures for downloaded apps? I've read in some older posts that applying different icon pictures wasn't working for some reason, like it wouldn't recognize the .png or whatever it was, but I haven't really seen any recent news about it.