I recently came across this relatively new project called mewt. Mewt is one of those widget toolkit that helps mobile Java developers in creating consistent user interfaces for J2ME software on mobile phones.
It offers widgets for lists, forms, tables, trees and even themes for your J2ME appplications. The widgets which automatically resize across different screen resolutions to allow the developer to worry less about the differences in screen resolutions of different J2ME-enabled mobile phone devices.
Looks like the poject is still is trying to expand. You can download the source code and read the online documentation from the Mewt project site at sourceforge.
Here’s a couple of screenshots of their themes:






