Do you have any colors that you would suggest for this type of forum? I agree, the gray and green color layout is a bit boring. Let me know what you think and I'll give it some tweaking!
Your layout looks pretty good, a bit spread out, but nothing too major and it's better than a lot of other new forums you see these days.
The big thing you need now is content and discussions. Work on that, so when people come to your forum, they don't see empty sections with no activity and they want to join to add in their comments.