While I did not get any of them I would also be quite annoyed at the differences in color compared to what we were shown and what they came out as.
 
This is what we were shown originally:                                                                                                         What we got:



So couldn't find an original picture of the black so can't say how off they are but man if I ordered blue or red I would not be pleased. At least the green is pretty close, but the red and blue are way different. Oh pictures are pulled from Jacob's twitter for the old ones and the current product page for the new ones.

Oh I found the black one. Not much of a difference, a little bit more of a matte than the metallic look but nothing huge. 
 
Old:                                                                                                                                                         New:

 
Another thought I had, and why I think it is important that EVGA does something about this. If you were buying a new car based off of the color shown, would you not expect it to be that color when you got it? Honestly with the manufacturing nowadays there is no reason to not have a color accurate rendering. Hell back a many a year, I worked in a plastics factory and while most everything was specific base colors, we could still do damn near whatever the customer requested. We certainly would not have been able to pass off that blue or red as what the customer wanted.