Hypo KSB genetic?

Is there a genetically reproductive hypo gene in KSB’s? I have seen “het hypo” animals from time to time in the classifieds but personally I have never seen a visual. I know there is alot of natural variance in color with the species, so are the hypo’s just a polygentic trait of breeding lighter animals together such as “canary” “flame” “nuclear” ect… l just think true ghost KSBs would look awesome and might be a fun side project to my current snow stripe adventure!