Can it change the color of the flame?

You can change your flame color freely if you're flame color is originally black (forged in black color). Any color you use as particle, it will be inverted and shown ingame.
But for other flame colors, you gotta try different RGBs for the particle to see what happens.
Also, if your flame is blended or rainbow colored, modifying the particle's color won't change anything.

Oh I see what u mean thanks