Sony Ericsson released a new version of their Themes Creator - Supporting Symbian phones, too.

current version now: SE Themes Creator Version 4.16

"The Themes Creator is a personal computer based application that allows users to personalise the “look and feel” of the Sony Ericsson mobile phones. The application allows you to create new themes, edit an existing theme and save a theme.

This application helps you to create/compose themes which are compatible with Sony Ericsson mobile phones. It's not a graphic editing tool, but more of a “composer”, that is, it enables you to create a theme based on existing components (sound files, image files). It also allows you to change display colours for menu text, clock display."

pkrass from Nokia Forum writes this news on the Blog:

If you tried a nice theme on N900 and dislike the shadows under the desktop icons,

you probably will like that little tweak:

 

You can remove the shadows from the icons by changing the name of the following files on N900.