I plan on adding some more color schemes over time. I have to pay for the new graphics though so it may be a bit. We don't get any ad revenues to pay for expenses like that here. I plan on adding some other color themes anyway.
I may offer up a premium membership at some point that gets you more features. That would be a good way to fund site improvements. I started a program like that over at ssrfanatic.com and it is working pretty well. Premium members get extra space for attachments, bigger avatars, etc. If I do offer someting like that here at xlrforum it will be completely voluntary like it is at ssrfanatic.