Exclusion
I've only been using GIMP for a little while and I've noticed we have no Exclusion layer like Photoshop and PSP. Lately I've been trying to follow several tutorials that include a dark blue exclusion layer. I've been trying to use Difference and Subtract, but the image comes out an ugly dark yellow and will not let me achieve the coloring I want. Does anyone know of another color that's good to use with Subtract or Difference?