That wouldn't work..The general idea for FH as far as markings go is having on set of markings for each three areas of the wolves' or felines' body. Its just easier to customize your character this way, rather than have to sit there and choose 6 or more markings and then choose their colors.
And besides, where would those markings go? We already have 3 sets of markings for the head, torso area, and tail..there's no reason to add more.