It could be a Mack Snow Pastel or Mack Pastel, as boywonder said. The Pastel gene just makes the dark bands into a more muted lavender, as you are seeing. This gene is mostly dominant, though, so if you were dealing with it, you'd see it in 80% of your offspring.
The babies that hatch out black and white, but lighten as they age are the Mack Snow Pastels, and the babies that hatch out bright yellow/black (and lighten as they age) are Mack Pastels (no Snow). Most people will sell a Mack Snow Pastel as just a Mack Snow because the differences aren't always very noticeable. The Pastel gene really shows itself the most when it's just by itself, so that may be the only time you really see it advertised.
Jess said it best. I thought it looked Mack snow pastel too. No albino-those guys hatch out pink/white and with albino eyes. That's a neat looking mack though. I love the lavendar.