Please read before commenting.

Maybe he should have a guitar strap, so it doesn't look like the it is just floating there.

Oops, I see now that you said they work better on light backgrounds, sorry

There is a little bit of a white rim on the bottom of the circles that shows up on dark contact lists

I like the style a lot, and they do look really good with the notebook contact list. Only thing is, I am not fond of the typing icon. The meaning is not very clear, and it looks a lot like away at a glance. I feel like maybe a "dot dot dot" would work better, in the style of the exclamation point.