From what I've read, this is not all that common and they mostly end up reverting to all green. But I think it's pretty neat looking. One of my first seedling X seedling crosses.
Pod parent
Very cool. I hope the variegation sticks around for you. I'm not sure what the odds of that are, but it can't hurt to root for your plant to hang on to the trait.
Variegation seems to be showing up more and more often in many people's gardens. Even if they revert, it's "in there" waiting to be developed in another generation.... or ten. I get very excited to see it but unfortunately, all the ones I've had have reverted. Mike Derrow has some interesting variegated seedlings.