No one really knows but they are most commonly described wearing Santa's outfit only green and instead of boots they have pointy green shoes. Some people think they wear red.
Santa Claus is not real, but he was based on St. Nick who is said to have had an olive skin tone.
most people say that it is because coca cola turned him red for an advert but in pictures that were painted the year before coca cola launched santa was wearing red
Caroline is wearing A preety sweatshirt and a santa hat
1930
Santa's bag is green
No, Santa wasn't originally green, but he does look green when he goes to Alien Christmas parties. They like that. Santa can change color at will, so he likes to fit in with whoever he is around.
Santa was first depicted wearing red, by cartoonist Thomas Nast in 1863, but up until the 1950's Santa was normally depicted wearing a green suit, sometimes also brown and white. His suit changed to red after Coca-Cola started running an ad campaign. The artist Haddon Sundblom, who painted him for this ad, dressed him in red to match Coca-Cola's color scheme. After a short time, this became the popular color for Santa's suit and is these days the norm.
Some older illustrations have Santa in blue or in green.
1840
Trees in general are naturally green. Santa could be any colour he fancies, and was indeed green or blue in early illustrations.
Probably Both. Merry Christmas.