Hey, does anyone know how to make colors in forge i have some examples below. Bungie.net : Halo 3 File Details
I'm not sure how he did that screenshot, but what most people do is throw random **** (Bubbles, Spike nades, regenerators) and shoot randomly with a weapon with the desired color (in this screenshot I think he uses a laser for the red side of the pic) hoping to get a cool effect on their screenshot.
This should be moved to halo 3 forge forum or the halo 3 screenshot forum. There are many different color effects in halo 3. You can look under black theroms guide in the halo 3 screenshot forum under guides
I if had to guess, he looked through half of a Blue Plasma shot and a Radar Jammer at the same time. Or you could ask him.