I missed a day, didn't I? ACK, I am so very sorry. Please forgive me. I'll see if I have the time to upload another one today to make up for that.
Anyway. Childhood Addison! This one doesn't really make much sense, unless you inspect Addison's psyche the same twisted way I have...and then it's remotely coherent.
Black
Every Halloween, she paints her nails black and goes out with her friends and neighbors as witches, trick-or-treating their way to several bags of fun-sized candy bars.
She secretly wants to be Mina Harker this year, but that would spoil everything, and not only because Daniel Asher is being Dracula.
So she dons her black cape and her black dress and paints her nails black, and, for one day out of the year, leaves behind Addison Montgomery to be like everyone else.
She wishes that she can be like everyone else forever.
Reference: Come on, guys. Dracula? By Bram Stoker? I think there's one more with Dracula, but that won't come for a while. Daniel Asher is a one-time OC, who, presumably, was cute when he was younger.