I'm wanting to add a unicorn to a scene I'm putting together. I've tried using the paint bucket to change the color of the horse to white, but no matter what I do, I can't seem to make it white. I tried doing it in Photoshop, but that didn't work either. I would really appreciate some help.

By the way, I'm kind of new to Poser, so please be gentle.
Thank you in advance for your help. =^)