What color is a mailbox?

Individual mail receptacles can be any color, although most are white or black.

Official "letter collection boxes" for the US Postal Service are dark blue, except that Express Mail boxes may have silver tops, red and white stripes, and an eagle logo as well.

Letter boxes (postboxes) in the UK and Australia are bright red, with Australia using yellow Express Post boxes. In France and Germany, mailboxes are yellow.

(see the related link for a complete list)