Is the highlight for interesting questions in SF too light?
I think it is. I barely noticed that I already have interesting tags until I shifted my view from my monitor.
Increasing the contrast of the interesting question would be nice.
Preface: I'm color blind and rarely use ServerFault.
Yes, yes it is way too light. Please darken it for us folks who have trouble comparing colors.
Looks and feels fine.
It's on that shade just before being too dark and way too light to notice. But right now, it's a nice kind of pancake batter hue to it.
But that's only from a perspective on a non-colour blind user. If you are, then as Eric points out, it's waaaaaaaaaaaaay too light to differentiate.