Effect Color, Effect Coverage and Effect Feather change the basic appearance of the vignette.
Depending on Background Mode, Effect Color controls the color of the effect.
Coverage is how much of the screen is vignetted at maximum motion.
TIP: Effect Coverage of 1.0 will fill the entire viewport when the effect is at full strength.
Effect Feather determines the fading on the inner edge of the vignette.
TIP: Typically the best values for Effect Feather are between 0 and 10.
These settings apply to all modes, although how they apply may differ slightly. Please see Background Modes and Masking for how individual modes use them.