The event store features warpaints for the Warbuggy. These warpaints have incorrect text that call them the "Green" and "Purple" warpaints, these should say "Blue" and "Green" respectively. 
The images for these is correct and you do get the correct warpaint to make your Warbuggies match the picture shown. 

   
If you purchased some of these expecting a different color/warpaint, please notify us of a prize redemption issue and let us know what warpaint you want or if you want them returned and the XP added back to your account.