thanks for all the input guys! i thought the strap was only in black, thanks for showing me the other options, sdolina.
my panerai strap is tan, and i think it lends to a less formal look. i use the reverso with my dressier fits, like suits or a somber SC, so i think i would go dark brown. ill keep you posted of course!
ps - sdolina, let me know if you find any good places to kop. also, did you post about this topic on a watch forum? i think i saw your avatar in a forum conversation about this when i was looking into it.