2 color radial gradient.
color1R = inner color red amount
color1G = inner color green amount
color1B = inner color blue amount
color2R = outer color red amount
color2G = outer color green amount
color2B = outer color blue amount
xpos = xposition of effect(0.0 to 1.0) 0.5 is centre
ypos = yposition of effect(0.0 to 1.0) 0.5 is centre
Good Radial for backgrounds, but you can also create some neat scenes with it.
Checkout the included demo, created with a just a black square and circle with the effect added.
(i had to use a seperate circle for the shadow)
Includes fx files and demo capx.