If you're going to go with something without text, have the shirt be the grayish color, with the orange stripe going across the entire chest.
To my eye, Slate, Asphalt, or Heather Grey would work better (in order of preference). http://www.americanapparel.net/wholesaleresources/ExpressOrd...
Also, these are 100% cotton, right?
Just keep a lint roller around.
If you're going to go with something without text, have the shirt be the grayish color, with the orange stripe going across the entire chest.