As there are quite a few of us here now, I thought Id cook up a theme for the P900 owners amongst us.
Right click and save-> here
To install the theme, copy the UTZ file across to your phone, open your flip, use the file manager to navigate to the theme where you have copied it to your phone. Hit the utz file once and it will take you to the theme dialogue
Edit
Preview Pics (don't really do much justice though, you cant see the gradients and things)..