After all reds have been cleared in snooker, the yellow is potted first among the colours.
While reds remain, a player nominates a colour after each red, and that colour is normally respotted if it is legally potted. Once the final red has been removed, the colours must be played in their fixed ascending-value order. That order is yellow, green, brown, blue, pink and black.
The yellow is worth two points, followed by the green at three and the brown at four. The sequence ends with the black, worth seven points. This closing phase is often called clearing the colours.
The rule is easy to mix up with the table layout at the baulk end, where the yellow, brown and green spots appear together. Their physical positions do not determine the scoring order; the order is defined by increasing ball value.