it's really hard to find pictures of normal people on the internet. i have a friend who used to wear red sometimes. i thought it was attention whoring myself. not that i have a problem with that.
actually i've worn a red shirt in the past. i normally go towards blue/black/white myself though.
i gave up search google images for red shirts, ... but found:
http://www.execshirts.com/dress-shirts/SILDKRE.htm which don't look too bad. although i'm not sure if it's dark or vibrant enough.
this is better:
http://www.mensfashionforless.com/dark-red-shirt.html