The "contrast" portion is linebred, I've been very fortunate to work with outstanding stock from Kelli @ HISS and Alberto @ A & M gecko. The High Contrast isn't a new trait but more less a forgotten beauty from the past.
I produced a few outstanding H/C Tremper's over the last few seasons, and used the best of the best when introducing them into my Afghanicus. Sorry for the ramble but to answer your question yes it's linebred.
It's fun and frustrating all wrapped into one. The frustrating part is their color doesn't set until 30+ grams. This little one has a lot of changing to do, but I'm liking how he started. :main_thumbsup: