Help: menu color changed from dark grey to brown on some programs and websites

Even weirder...the thumbnail in your post, I see what you mean, (it's weird colored) but when I click on it to see the full sized image, it changes color, back to what it should look like. WTF?

 

Same here, really weird. No idea what the problem is either. Although the full size image (on the right) looks way too blue to me in the grays, whereas on the left, the gray parts - the ones that aren't brown - look about right.

Actually I might have an idea, I think it has something to do with color profiles (which Safari and Firefox have different levels of support for). Check your monitors display profile in System Preferences at any rate and maybe try recalibrating it. That would affect the entire display though, not just some apps, but it's a start. I think perhaps a color setting somewhere became corrupt and apps that use it like Safari (webkit apps?) are displaying weird colors as a result. If that makes any sense.