RGB split effect
Separate each component's RGB(red, green, blue) colors and display them on the screen with an offset:

Parameters
The Red, Green and Blue X/Y offsets set how far, in pixels, each color channel is shifted from its original position. The larger the offsets, the stronger the chromatic aberration. Setting all offsets to 0 disables the effect.
Reference
All effects are listed in the effects reference page.