They have a section called 'Design Challenge' which is similar to what we want to do, but not quite. We want to allow members only to submit their designs to us in which we will buy them if we feel they are something we want. What they have is like a competition, which is fun, because the winners get money and everybody gets recognition and exposure. We might do something like this later, but for now were sticking with our first idea.
The color scheme goes well with their company name and it's not overpowering. The overall design of the site is professional and easy to navigate. This site is something to aspire towards.