Alright, i was wondering. You know how Vincents eyes are the orangey red that they are in DC and in ff7 and AC? Were they red back in the day when he was a turk? if not, what made them that color?

I think they were red when he was a Turk... But if not, they may have turned that color after the experiments Hojo performed on him. I'm really not sure - I thought in DoC as a Turk, they looked red. o.O
I'm kinda confused on the vampire issue tho..

OK, A he's not a vampire, he was frozen in time. Big difference. Yes, his eyes were still red as a Turk, and probably for his whole life. Red eyes are really real in some parts of the world. Anyway, that answer your question?

Red eyes are really real in some parts of the world.

Yes...cause its oh so common.....

the fmv where Vincent first meets Lucrecia show him as a turk and still with Red eyes....

And Square new blue eyes would never match his oh-so-fanboy appealing costume.

And Square new blue eyes would never match his oh-so-fanboy appealing costume.

its all about colour coordination these days....

Hey how come his eyes changed to yellow at the end of the game?

It's a hint of things to come ;).

Basically he will be hired to wear a banana suit and dance for people.

it was pretty much the experiment..chaos.

Didn't Rosso have Red eyes too? I guess it is just a random eye color like blue or green, though I would have liked to believe that the red eyes was a product of some sort of inner darkness the characters have.

In the cutscenes where Vince was remembering all what happened with Lucrecia his eyes were red. So it means that they have been red all the time.
As for the yellow ones it`s only because of chaos, in the last ending cutscene he talks with Shelke and you can perfectly see that his eyes are just as red as always.

Demonic possession

also

Inb4mariashriver

He inherited his red eyes from his father - Lucrecia says as much, and we can see so in the cutscenes. And Rosso has red eyes because she is "the Crimson" (just like Azul "the Cerulean" had blue eyes)

And Rosso has red eyes because she is "the Crimson" (just like Azul "the Cerulean" had blue eyes)

And that is because they were engineered and their creators made it so?