Removing Tobiano

Is there a way to remove the Tobiano pattern from one of my horses? I'd like to make her solid, but I can't seem to get the marking applicator to work on her. I'm assuming that's because it won't allow for leaving the field blank when choosing a new coat pattern?

Umm, that's good question XD
Mark Applicator will not remove Tobiano if that breed doesn't have any other markings.

Maybe you should make a suggestion for this? 

There has been a suggestion made for allowing marking applicators to remove markings as well, but that change has not been implemented yet so there is no surefire way to get rid of the tobiano. For now I guess you could try to assign a less obtrusive marking instead (like rabicano if that's available for the breed), but right now markings cannot be removed.