Personally I love the plain Grays - of course all my Poker, Browser, Desktop, 2+2, etc are all skinned dark.
I will admit I also thought PT3 was 'prettier' when I first tested it - but I soon didn't care which 'looked' better, only which performed better.
Also, if he adds skins to the HM GUI - I will never have time to play poker, I will be too busy skinning everything. Stars is adding Lobby Themes soon.
Stop in da brew Choccy - we miss u, IMO.