If you make a dunmer with different colored eyes or you use the lineage elves dunmer is that not role friendly?
Lineage elves? Eh. People create cross-universal characters because they recognise characteristics of both races that they like, but in my opinion it is infinitely cooler to operate
only in one universe, and then flesh out the character in the context of that universe. Crossovers are lame.
As for physical attributes, that's entirely up to you and how lore-friendly you want your character to be. In current canon ES lore, you will
never find a Dunmer with hazel eyes. Dunmer only have eyes in varying shades of red... and according to
Morrowind lore, which is far more pertinent to the race, the entire eye is tinted, including the sclera. Think of the http://www.scifi.com/dune_2k/images/gallery/2paul1.jpg in the
Dune canon, but red.
Unless the Dunmer in question is a vampire, that is.
You aren't able to discern the colour of Vivec's eyes as far as I'm aware. However, http://www.imperial-library.info/mwbooks/vivec_face.jpg of Vivec shows that his Chimer eye was purplish/blue. However, you won't find a Chimer in modern Tamriel, so the point is moot.
Note: In
Morrowind vampires did not have the same faded red-iris eyes that
Oblivion vampires have. Their eyes were irisless and pupilless; kind of like http://www.maj.com/gallery/Astion/TheElderScrolls/TheDragonBreak/moth_priest.jpg.
Dunmer aren't any of those, they just have no manners.
The Dunmer have a
very strict system of morals and propriety. That system just so happens to be foreign to most ways of thinking. In a way, they're probably one of the most consistently moral people in Tamriel, insofar as their prudery, House Laws and xenophobia are concerned.