Can't copy/paste wirecolor from the create menu.
The colorpicker in the create menu need to implement a right-click menu to allow quick copy/paste of the wirecolor property. Like the colorpicker accessible with maxscript.
eugenio jr. commented
Yeah, but a nice workaround I do is to open Bone Tools in Animation -> Bone Tools. There is a wirecolor slot in there where you can copy/paste. ;)