FFADE_IN 0x0000 // Just here so we don't pass 0 into the function
FFADE_OUT 0x0001 // Fade out (not in)
FFADE_MODULATE 0x0002 // Modulate (don't blend)
FFADE_STAYOUT 0x0004 // ignores the duration, stays faded out until new ScreenFade message received