Print the parts with PLA, 0.2mm layer height and 2 perimeters and without support. I've used 20% infill and a 0.4mm nozzle. Make sure you sandpaper the parts. Then I apply some primer paint and when is dry, I sandpaper the parts again. I want to get them as smooth as possible so apply how many layers of primer you think is enough. Once the parts are smoother, I can use some spray paint and give them a color. I will paint them white and some silver in order to give them an elegant and minimalistic look. You can use any other color you want.