Here are some of the tips that will help you to make skin color with watercolor using GIMP:
- To make a palette for light skin tones, mix some yellow, red, and a tiny bit of blue paint
- To get dark skin tones, move the cursor to a shade of brown
- In order to achieve neutral skin tones, mix Chrome Yellow and Violet
- For darker skin tones, mix Phthalo Blue Green Shade with Pyrrole Red Light.