From Lexicanum

Anyone know what's more up to date, red blood or green blood? I'm just curious, as there's sources that claim both. Thanks. --Mob 21:24, 6 October 2008 (CEST)

I prefer green blood and i've seen it in a Chapter Approved, but not since.--Jonru 22:34, 6 October 2008 (CEST)

• It sounds like the author intended to say "Green Skin" since he is explaining the photosynthetic properties of the Ork body. Additionally, he has in the same paragraph already referenced the Ork blood to be "red". I Believe it's a typo since I've only ever heard of Ork blood to be red.