The TabletsII ui is very good.
Plain gray gfx are default but he has included other colours (like green you mentioned)
Hes just put out a new beta with fixes a few nigley little bugs.
Im very happy with the way my UI is looking.. dont conisder it too cluttered although i have too many damn skills i need to use so i need 3hotbars befor i even think about crafting!
P.S. If your replying his UI looks like the reply dialog a bit i think
