To me at least that just looks like the normal axanthic color with the white spider sides, color on top is what axanthics look like as babies. As for lightening it up, axanthic + pastel or fire seems to lighten it up and get a little more white. Check out the axanthic firefly, I bet it's what your looking for, not sure how they look as adults though. I got to see some babies in person..... just stunning.