GenFadeBackground background, red, green, blue, alpha, msDuration
Background to fade.
Fade to red.
Fade to green.
Fade to blue.
Fade to alpha.
The duration of the fade in milliseconds.
This command causes the colors and alpha to fade from their current setting to the specified setting over a period specified by msDuration.
GenFadeBackground background, Off
Stop a background's fade event at the current setting.