Everyone that who has looked at windice told the same thing about the interface/design. The theme of windice is catchy and not so eye soring unlike other casino, I think this should be the standard color for most casino's.
Anyway smoothly working the site. And Design is looks like good to me. I use my phone to login sometime it does not work when I touched to login button. But I don't know that was my mobile problem or of this site. Because sometime my phone also do hang.
Please do try to login with other handheld/phone if you have it and see if the problem lies on your phone or the site itself.