I just LOVE my bright orange mail box!!!!  We just moved to a rural delivery area and mailboxes are all one after another on the main road.  While everyone seems to have a black mailbox, we decided to purchase one in orange; not only to be a bit different but also for visitors to our new home.  When giving directions, we can just tell them to "look for the bright orange mailbox" and since that time, no one has gotten lost or missed the turn into our driveway!!!  And, of course, colors are acceptable to the U.S. Post Office!!!!!