change these icon but remember the icon size must be at 64x64...
here is the example after i have change the catorise icon on my n900....
These were both exactly the same instructions yet OP pretty much said "Lolno" at even the concept of the first one. In my head I'm ranting about spoon feeding and people being stupid but... I really can't be bothered. Enjoy another GUI.
Yeah catorise uses the same icons as HAM(default app mnger), so changing those icons would surely work and that way HAM would be themed the same way. However I think it's also possible to change catorise to fetch the icons from somewhere else.
Disclaimer: I have never done it, just been looking around