Walter noticed the different colors of Merope's eyes, but did not remark. He was the last to judge people based on oddities in their appearance, and even if he was, the effect was not unpleasant. As a man who had been called "backwards" by his own mother as a child... well. He wasn't going to remark on that, either. For what he liked to call "personal reasons."
Sighing, Rorschach stepped under the ladder, touching his shoulder as if telling Merope to use it as a stepping stone.