Use the following case-sensitive codes after enabling the Postprocessing cheats with the "boolProp enablePostProcessing true". Note: Do not enable or use the Postprocessing cheats unless your video card supports pixel shaders.

Result - Cheat Code

Blur effect; red, green, blue value must be between
0 and 255, and x (bloom) between 0.0 and 1.0 - bloom [r g b x]

Centered blur effect; centerX and centerY are screen
coordinates; x (vignette) must be between 0.0 and 1.0 - vignette [centerX centerY x]

Grainy screen effect - filmGrain [0.0-1.0]

Letterbox screen effect - letterBox [0.0-0.4]