If you create a favorite with "mixed" settings, one checkbox on another off ... what would the restriction be?
Besides, why restrict? The user can adjust the colors the way s/he wants.
It is up to the user to define his/her favorite, which values are on/off, positive/negative ... So, choose your color the way you want.
I also figure everyone has their own methodology of what colors best fit with what settings. Who am I to restrict anything?