I do headcanon Aaron kissing Elizabeth on hte forehead whenever she's sad or worried, or he's secretly worrying himself. Just seems like the sort of thing he would do to show his little sister affection :)
Heterochromia - a beautiful mutation of the iris.I had no idea that it was a mutation. My eyes are blue on the outsides and fade to orange around the irises. Depending on my mood and what I wear my eyes change color.