Hey everyone, I've been looking everywhere for how to do an effect I need for my game. What I want is as the player is moving through a black and white world, I want to bleed colors that turns the world into color as the bleeding expands leaving a trail of colored world. The closest I have come to finding this effect is this: . But this in only a global effect. It doesn't help me as far as leaving a trail behind. Does anybody have any advice on how I can accomplish this?