What color of dress shirt to wear with AE khakis and a dark charcoal grey quarter zip or maybe just even a dress shirt and khakis with a tie
You can try out purple, red, yellow, green or blue, since they blend well with khaki pants. You could also try out a white shirt, since it is bright and will make the grey quarter zip stand out. Read more from http://suite101.com/article/what-to-wear-with-khaki-pants-a205630.
maybe a burgandy dress shirt