Yep, stripe & motley share the same locus. Rarely, there are some belly markings on stripes and/or motleys, though often you will see color on a stripe's belly... just like this great lookin' normal. Just one of my stripes have belly color, all of the other motley and stripes I own have bright white bellies. Personally, I like the look of the plain white bellies, the contrast with the snake's colors is beautiful.