Those 2 links are great examples @Kasei. For me, the first link is dark background and gets lighter as you scroll down. So I can't see the action bar until the bottom posts.
The second link is the opposite. Lighter at the top then dark near bottom. But while the actin bar is easier to see in lighter sections, it still blends in more then I think it should.
I think the overall "big picture" across whole forum sometimes looks like a DS background from a game screen - reminds me a little bit of the Temple fight room. I've noticed the bigger picture when I'm on my PC.
Sent a gentle reminder to site admins on this today.