[Crinus]

I remember >10 years ago there used to be some "plaf" libraries that provided very easy themeing abilities for Swing that even came with a WYSIWYG tool to create themes. It is a shame something like that never became part of Swing itself and instead you have to create tons of classes just for a theme.

[pjmlp]

Or actually buy them.

http://www.jgoodies.com/ is still in business, to give a possible example.

[Crinus]

This doesn't fix the issue of Swing theming being hard. The fix would be to make it much easier, preferably with a visual editor.