"charles" wrote in message
...
But They DO look like letterboxes.

I've never seen a black letterbox.

Really? How odd.

google returmns half a billion hits for 'black letterboxes'

Letter boxes in the UK are red

That's pillar boxes (and similar rectangular ones on poles or set into
walls). The phrase "letter box" is confusing because it can relate both to
places in the street where you post a letter at the beginning of its
journey, and the slot in your front door where the postman puts the letter
when he delivers it to you at the end of its journey.

The latter can be whatever colour you want - typically a colour that doesn't
clash with the colour of your front door. I've seen plenty of black ones -
ours was black power-coated metal.