0.4mm nozzle
0.2mm layer height
15% infill
3 top layers
Ironing on all top layers
Each part is labelled with the color to be used. Add all the files to your project at the same time and load as a single object with multiple parts. Then, choose the appropriate filament for each part in your slicer.
Start with red, then black, then grey, then white
When done with 0.2mm layer height at 100% scaling, filament changes at layers 16, 21 and 26.