I kind of like the way they are presented, now. They *are* subdued, because they aren't really what our pages are about. Nobody is going to visit a UNL page because it has SN icons and links. So that does pull away some of the attention they might otherwise earn. Maybe not attention, but "distraction".
But they do "light up" with rollover color. And as far as I know they roll over into their branded colors, don't they? I'm not in a lot of social networks, just Facebook and LinkedIn and something called Yammer, I think. The Facebook icon pops up in "Facebook Blue" and the LinkedIn icon comes in in the blue they use. Twitter's icon shows up in their aqua-esque color... so it seems to me that we are maintaining all of their branding information, aren't we?
I think we've hit upon a pretty good solution, actually.