Following some links and opening a bunch of meta posts from different per-site metas at the same time, I noticed an odd discrepancy in the icons:
The Economics meta icon seems to be solid black, unlike some other beta meta site icons (to its left), and also unlike the Economics main-site icon which isn't solid blue but has a couple of white letters on it as I'd expect.
I'm not sure how many sites this affects, hence asking on main meta rather than Economics meta itself (also because I don't have an account on Economics SE, and a per-site meta post is less likely to be noticed).
Why are some (at least one) meta beta icons solid black?
&
), while it and the letters look much "cleaner" (for lack of a better word). Same computer, same browser, just a different monitor... Huh. Maybe it has to do with Retina displays?