666 or 616 is a translation as it is written in Greek.
And the orginal in Greek also as (chloros) as we know Chlorophyll Greek green for pale horse.

Irvin Baxter Lesson 4 - The Four Horseman from revelation-6 part 5 of 6

http://www.youtube.com/watch?v=LGa32aMegFE

Allah/Islam is the beast. 666 = "in the name of Allah". Part 3

http://www.youtube.com/watch?v=Gspeig7eDZs&feature=player_detailpage

Will that be a big part of the mark of the beast?
It could.