The P900 supports a kind of themes very similar to the rest of non-Smartphone Sony Ericssons.
They change common backgrounds, all menu colors, and the background of the top and bottom bars of the screen.
However, the format of this themes and its images is a bit more complicated than before, and without a proper software like this one, editing or creating themes it's a very intricate work. Vito's P900 ThemeEditor helps A LOT.
VITO ThemeEditor is a FREE for non-commercial use PC-based application that allows you to create your own themes for using on the P900.
