This is one of those questions where each individual can really only answer for themselves.
Assuming you mean Stack Overflow, I don't find it has that effect at all - my only difficulty is that in some situations the difference in colour isn't obvious if you're viewing a screen from a non-ideal angle. (IIRC this particularly affects me on my phone, which makes it a less serious problem to start with.)
It might not be a bad idea to have a visual indicator apart from the background colour - although there's already a lot of information in the list, and adding much more clutter might not be a good idea.
How about changing the appearance of whichever tags contribute to the question being interesting? For instance, they could be made bold, or underlined. That might just give an extra hint without being too messy.