yeah wow... .tsk files dude..
Talking about hex edits and ****. Just find whatever .tsk file you want from the internet(google search), they all should work. Drop that in the windows folder and select it from Settings\Personal\Today.
Basehue Express you should look into that also. All the newer themes always show it as shiny but sometimes you want just a solid color like black or something. Without that even if its supposed to be solid it will show shiny.
Make your own themes you say.. ThemeGenCe
Here
http://www.pocketpcfreewares.com/en/index.php?soft=1523