Board Thread:General Discussion/@comment-25086553-20140620203453/@comment-4651179-20140620225946

This could've been merely a mistake of the colorist.

Sometimes his eyes have been blue, others brown and even without iris. In the most recent volume, he sometimes had brown eyes. In Deadpool Vol 2 11, his flashback appearance shows him as having brown hair.

So yeah, just artistic license / continuity errors. But more importantly: calm down.