One of the things I quite dislike about myself is that I blush very easily. Any time sudden attention is turned my way, even for good reasons -- a thank you received in a public setting, etc. -- I usually blush a fairly bright hue of red. It's worst when it happens at work. I'd blush if someone accused me of something, even if I wasn't even remotely involved, so it would look like I was hiding something. It sucks.