wow whatta purdy snake. i haven't seen an adult one, but others may chime in.
i think the blue/purple will dull or darken as this color does so in other morphs. i think the Pumpkin line w/ the addition of Ghost will maintain it's overall colors tho. i have a Goldblush Mojave which is a line bred Mojo with enhanced colors (like the Pumpkin Champagne) and an Enchi Ghost and Honeybee and they are as bright as ever, even more so after a shed.
at the very least, the breeder may have pix of adults.