Santa's costume: A Note about RED

I saw the clerks that were wearing Santa hats at the supermarket near the station.
I remember that Santa's red color is Coca-Cola's color. Is this an urban legend? Or true?
I have a memory having seen pictures of Santa Claus dressed in green or blue. I guess those pictures are taken or drawn in Europe and other countries.
Red color means or meant differnt things, at least in Japan.
Char called "Red Comet" in "Gundam". (cf. shah)
Comics titled "RED" by Naoki Yamamoto.
A song named "A Rose of Passion" by BLUE HEARTS, Japanese punk band, includes the words "a crimson rose of passion ".
Red coler of Hiroshima Carp.
(I will add words whenever they occur to me.)

Red is also the color of the bloodshed.

related links:

赤についての覚書:Note about RED
http://2boy-yakyu.blogspot.com/p/note-about-red.html
 
サンタのコスチューム、赤色についての覚書
http://2boy-yakyu.blogspot.com/2010/12/blog-post_6507.html