01-21-2023, 09:36 AM
Very probably the base image ( a flag) is in Color Indexed mode with a limited set of colors in the colormap.
When you first open the flag go to Image -> Mode and if it is Indexed change it to RGB.
You can also see Indexed / RGB top of the Gimp Window for the image
When you first open the flag go to Image -> Mode and if it is Indexed change it to RGB.
You can also see Indexed / RGB top of the Gimp Window for the image