I think the problem here is that any colors the site uses will likely have a negative effect on some images in the gallery....renderosity can't control which colors you use, so there will always be some colors that simply don't jar well with the color of choice. On top of that, there are the usual preferences of colors (some folks don't like certain colors)

If it were my site, I would never allow a gallery that I didn't strictly control contents of to have any color: either black, white or somewhere inbetween. Otherwise, you'll get garish clashes with some images-and since this is an artist oriented site...that is pretty bad. I think it's clear that those making the big decisions are not designers and probably never even thought of thumbnails and pictures fitting in with the rest of the site...yet, this site's whole purpose is visual in nature...

As for my opinion on the rest of the site, it looks OK. It's more modern than the previous style, and reminds me of most of the new CSS based sites-which means they are definitely moving in the right direction. I think they are doing the right thing in general, and look forward to seeing how things look in the near future.