They're mostly realistic because of their parents. Though they're white and red/brown parent has purple markings, and dad had blue markings, so they have purple-blue markings.
Their parents names are Minn and Jess (a genderfluid child). Oh, and Jess has blue brown heterochromia, so Kael has a brown eye (the one you can't see on this image).
I hope they work...
These guys are really cool, and I tried.