I have sectoral heterochromia. My eyes are blue, but my right eye has a patch of green. It's a little hard to see, especially with my glasses on and how small it is (it's kinda like
this -- colors aren't accurate, of course, I threw this together in two minutes), but it's there and I get super happy (and embarrassed) whenever someone mentions it and compliments me on my eyes. Thankfully I haven't had any bad interactions, the worst ones were just people being confused and phrasing their initial question in a way that could have been taken as rude.