Brown pants, which shirt?!?

Ah, the dreaded bottom of the clothes barrel situation. I would definately go for shirt #3. From the sounds of it the colours in that that shirt will match the pants the best without over doing it with brown. If your not really sure (or you dont believe me) just try them all with the pants and see what you think looks best. It also sounds like you need to go shopping or do some washing. Enjoy.