3D PRINTING SETTINGS

Resolution: 0.2mm / layer or less
Wall count: better with 3, so you won't need infill
Build adhesion type: ~4mm brim
Supports: None
Infill: None

If you want to print it with a stripe as on the pictures, add a "custom code" for filament change in your slicing software of choice.
For the effect as on the pictures I set the first filament change at layer 40, then next filament change at layer 80, with a resolution of 0.2mm/layer.
To do so, first, slice your model.
Then, in CURA go to:
Extensions > Post Processing > Modify Gcode > Add Script > Filament Change
And in there you input the layer where you need the filament change to happen.
Slice your model once again so it updates your Gcode.
And there you go! Ready to print!