FFmpeg change the color of a video

Change brightness:

ffmpeg -i INPUT.MOV -vf eq=brightness=0.5:contrast=2.0:saturation=2.0 -c:a copy OUTPUT.MOV

initial brightness (default: 0.0)
initial saturation (default: 1.0)
initial contrast (default: 1.0)

Change to black and white:

ffmpeg -i input -vf hue=s=0 -c:a copy output