Toribash
Original Post
Changing flame colour
If I bought a completely red flame, could I recolour it using a FPT to yellow? if so, what colour would the fpt have to be
I don't believe you can make it bright yellow, as red and yellow are both primary colors. You could probably find some way to make it yellow-orange-ish though.
FPT is really similar to joint texture: it's influenced by the force/lax color. In this case your particle texture will be influenced by the red of your flame. Probably you will obtain only variations of red.
Simple answer: Find the negative of the color you want the particles to be. Done. It worked for me.