Yes Santas suit was originally green back when he was known as St Nicholas, he then had a totally different meaning to the Santa Clause we know today.

The truth behind the Santa we see in our times came about in the early 1950's and someone we all know very well helped to create this image.

Coca Cola had a problem with sales in some European contries at the time due to 2 reasons.

1. Post war depression

2. Unknown product hard to introduce due to the depression.

To make the product saleable world wide they had to come up with a sales pitch to capture this market. One clever sales marketer sent to Europe was studying up on childrens stories whilst there and came across St Nicholas, a man who gave willingly to children so that they may have some joy in their poor lives and decided to spread the sales of cola with a jolly fat man in a red and white suit, which perfectly matched their product colours, and instilled a feeling of joy about a man like St. nicholas who gave presents one day of each year to enrich their lives even just for a while.

Not knowing this was created just to sell a product the Europeans took to it like a duck to water in the thought that America had stories similar to their own fabled St nicholas.

You now know the story of both Santa's red suit and Coca Cola's push into the European market in hard times.

Clever bunnies those guys.

Hope this helps.