SOP says:
"Broken--color is to be any recognized breed variety in conjunction with white. It is to have both ears colored, color around the eyes, and on the nose. (No preference given for a nose butterfly over and evenly balanced nose marking.) The body pattern may be spotted, with individual colored spots, or patches over the back, sides and hips, or a blanket pattern, starting at or near the neck, and continuing over the back, sides, hips. Preference is to be given to an evenly balanced pattern...<snip>...color to be between 10% and 50% in the judge's opinion..."
So, pretty much any color that is normally showable...