04-12-2021, 08:50 AM
Definitely more than 4 or 8 colors. May be 4 to 8 hues, and a lot more tints. If you want to reduce the colors in an image, the best method is to make it color-indexed. For instance, one of your images, slightly blurred and color-indexed to 24 colors (no dithering). If you want to change colors in the result you just edit the colormap.