Personally, I hate changes for the sake of changes. The last forum color changes look exactly like that. It is in the opposite direction of business-focused image.
Existing sites’ muddy colors are not the best marketing option. But the new forum schema is even worse.
Like the best coding standards, there are best UI standards, everything else just irritates users (in most cases). Decreased contrast creates additional strain to my old eyes. What reason?
/end of rant