Because the main color can occupy any slot and it changes from shader to shader, it would be nice for all shaders to be changed so the primary color is always in the same position. i.e. the top. You kind of did this, but getting the color you want where you want it is STILL a problem. Having the ability to rotate the main color on a shader would be ideal, so you can get the colors where they look best. Overall, there are TOO many shaders that are just crap! I would love the ability to remove shaders I will never use from the matrix.