User blog comment:BastionMonk/Colorful dinosaurs/@comment-1791057-20130401190612

I don't think I could say it better than what a fellow student of paleontology of mine said about this:

"Also, animals are brightly colored but within reason-- they only have as much color as they can get away with and not get eaten. It kind of sounds like Horner wants rainbow dinosaurs, which isn't okay anywhere."

Yes, dinosaurs were likely colored, but within reason. JP3 went beyond that reason with overly stark and contrasting colorations. Brightly colored combs, or other apendages such as the frills of ceratopsians or the plates of stegosaurs that likely held large vein clusters would have flushed with blood for display reasons creating bright red and orange colorations. Outiside of maniraptors, however, we have no eivdence for colorations, let alone bright or contrasting ones. I feel it would be best to play it safe here and use earthy tones that we're all familiar with.