I think that Red, Yellow, and orange (with the exception of Sierra, who has yellow but his type is unknown) almost always goes with Sharptooth or Egg Stealer. I haven't seen a Leaf Eater (other, than, again, Sierra perhaps) who has one of those eye colors.
The others, I think, go with Leaf Eaters or Bothteeth.
Other than the three colors above, is there any other correlation between eye color and speceis and diet types?
(Also, given that red, yellow, and orange almost (again, Sierra might be the exception) go with a dino whose dietary type would mean (with the exception of Chomper, who WAS allowed in) that they are NOT welcome in the Great Valley, would a character, say an omnivore who has Sharptooth abilities be spotted right away or would nobody bother to care about a character, even if they had red eyes?)