Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:6108421.
I generated a 4 color STL of the Demon Skull decal with the amazing HueForge program. I used red colors but you can use any color combination you want but it is recommend to go from dark colors to light colors. if you interested in how I made this file you should check out HueForge its very affordable and only takes some messing around to get used to the program and make amazing looking prints.
The print details and layers filament changes are in the describe note file as well as bellow.
Print at 100% infill with a layer height of 0.08mm with a base layer of 0.16mm
Filaments Used: Polylite Black Transmission Distance: 0.3 Polylite Red Transmission Distance: 7.5 Polylite Yellow Transmission Distance: 11 Polylite White Transmission Distance: 6
Swap Instructions: Black until layer #6 at 0.56mms Red until layer #11 at 0.96mms Yellow until layer #18 at 1.52mms White until layer #20 at 1.68mms
The slicer software I used was Bambulab and the printer is the Bambu X1 carbon with AMS.
Keep and eye out if your interested in more HueForge models I plan to upload many more.
Thanks