I am very interested in Sven's comment 'Also it will be a lot easier to change the theme to your own needs.' Can you provide any pointers/info on how this can/should be done? I too need to modify the GXT 3.0 theme, I haven't looked at that yet in detail but it seems it would be hard because each CSS appearance is spread out over each widget's, panel's, etc source code...just finding them all seems like a large task. I would love to hear about how themes can be created in an easy way. Any pointers regarding custom themes would be greatly appreciated.