Just use FILT to make any color you want. the important thing to remember is that FILT's color is temperature-dependent and it has different TMP values (i actually have a save about that if you search user:niven on tpt).
tmp 1: changes it to filts color (if red phot go through blue filt they will be blue)
tmp 2: adds color to phot (if red phot go through blue filt they will be purple)
tmp 3: subtracts color from phot (if yelloe (green + red) phot goes through green filt it will be red)

actually I messed up a little with the tmp.
What i said is 1 is actually 0 and 1 actually should be that it only lets phot that contains that color go through the filt (red pht tries to go through blue filt and it's "erased")