The colors on the video are the ball colors in Snooker. Snooker is played with 22 balls, made up of one white ball (the cue ball); 15 red balls, valued at 1 point each; one yellow, 2 points; one green, 3; one brown, 4; one blue, 5; one pink, 6; and one black. Without counting the cue ball, we’re left with the black ball.