I have been watching snooker for a few months now and I have never seen a player hit the wrong type of ball. Personally, I often get confused and forget which type the player is on (color or red) and then am surprised when the player lines up on the opposite type of ball.
Has any top player ever hit the wrong type of ball deliberately in an important match? By "hit the wrong type", I mean that the player deliberately pocketed a red instead of a color, or vice versa.