Sorry, my bad 
This is what it should look like:
https://www.morphmarket.com/c/reptiles/pythons/ball-pythons/genetic-calculator/?s1=Pastel%2CHet+Clown&s2=Pastel%2CHet+Clown
This is what happens when oneboxed:
https://www.morphmarket.com/c/reptiles/pythons/ball-pythons/genetic-calculator/?s1=Pastel,Het%2BClown&s2=Pastel,Het%2BClown