Goku as Super Saiyan 4 fused with goku Super Saiyan Blue give goku blue hair but he keeps the original fur color.

Go even further beyond with kaio ken!

Ssj4 is the natural sayian power up but goku was a golden ozaru when the transformed so instead of brown fur he got red fur the hairy sayian is a type of powered up base form thus he can add a ssj transformation to it and so on and so forth (don't mind the link, it was the only way to paste this on phone ;)

Might make different presets in the future like giving goku blue fur if requested :)

xenoverse installer tool

v1 first release