UPDATE: Thanks a lot for the front page Tom, Wade, and everyone here at NG! We appreciate all the helpful reviews!
Finally, it is here. After hours of hard work 12 artists finally present to you:
THE 5 SHADES OF GREEN COLLAB!
-cook-, Greedom, TwinsenDude, mynamewontfitin, Benny_Creations, elkrobber, Omnilurk, API667, Valtrix, ReNaeNae, SkyRocket, and RuneAura present to you an original collaboration where the artist was only to use 5 shades of green.
Benny_Creations took a slightly different route for this challenge by making a game instead of an animation. He challenges all to beat the full 8 levels of his plane game (or else!)
TwinsenDude took the challenge to animate a full 3D short using only the specified 5 colors.