Here are the results of that mating (from the genetics wizard at www.worldofballpythons.com). A lesser/phantom is called a karma and is a blue-eyed white, like a lesser/mojave combo. My guess is that there is little if any visible difference between a karma, karma woma, karma yellowbelly, and karma woma yellowbelly.
6.25 % 1/16 Normal (Wild Type, Classic)
6.25 % 1/16 Woma
6.25 % 1/16 Yellow Belly
6.25 % 1/16 Lesser (Lesser Platinum)
6.25 % 1/16 Phantom
6.25 % 1/16 Phantom Yellow Belly
6.25 % 1/16 Woma Yellow Belly
6.25 % 1/16 Lesser Yellow Belly
6.25 % 1/16 Lesser Woma
6.25 % 1/16 Karma (Lesser/Phantom)
6.25 % 1/16 Phantom Woma
6.25 % 1/16 Phantom Woma Yellow Belly
6.25 % 1/16 Lesser (Lesser Platinum) Woma Yellow Belly
6.25 % 1/16 Karma (Lesser/Phantom) Woma
6.25 % 1/16 Karma (Lesser/Phantom) Yellow Belly
6.25 % 1/16 Karma (Lesser/Phantom) Woma Yellow Belly