Looks like a super snow to me. The only other thing they could be is a super snow eclipse but there doesn't appear to be any/enough white on the nose and tail for that.
Very cool! My guess would be its a mack snow but totally looks like my super snows as they grow. The mom of my super snow kiddos is from Thad's reduced snow line so my perception is probably pretty close to his!
I had several geckos this season that started out black, then began to develop lines of black stripes like a supersnow and finally turned yellow. They were Mack snow, usually eclipse. Here's a thread about my first one: http://geckoforums.net/f125-morphs-genetics/99863.htm
She is now completely yellow and if I remember tomorrow night I'll take a picture. You wouldn't believe the difference.
I'm really starting to wonder if we're looking at a different variation of the Mack Snow gene. I know someone else had some Macks that showed this strange development from appearing Super Snow to bright yellow. Sounds a lot like the Mack Pastel development descriptions on here from several years ago.
I have a mack snow male (hyper xanthic) that you can see in my albums. He had no yellow on him at all up until just about the time I took that pic. Since then (about 10 days) his yellow has brightened up a lot. Could that high yellow be passed into the super snow form?