Scientists have not seen an alien, so there is no proof of which color they are.
'Eiffel 65 - Blue' has blue aliens in it.[EDIT]search one more time in youtube, daft punk has music with blue aliens in it in a movie calledInterstella 5555: The 5tory of the 5ecret 5tar 5ystem.
b.o.b
b.o.b.
Blue Collar TV - 2004 Aliens 2-8 was released on: USA: 21 June 2006
Star Trek has Polarians, they're blue. I don't remember them, but both the Andorians and Bolians are blue.
perhaps dragons?
flesh,yellow,silver + lite blue.
Reno Collier.
B.O.B. which stands for Benzoate Ostylezene Bicarbonate, but he just goes by B.O.B.
In my opinion they were aliens. Mean,selfish aliens that didnt care of anything. Hitler didnt even have blonde hair and blue eyes! No they didnt have contact with aliens
If there are aliens here and they procreated those "alien children" are no longer alien but earthlings like me and you and my dog blue. I know that does not answer your question but I thought it was interesting.
The blue aliens looked somewhat like Native Americans. And like Native Americans, whites stole their land including their sacred places. The blue aliens fought back like the Battle of Little Bighorn.