In snooker, what is the highest value of a single coloured ball?

In snooker, the highest value of a single coloured ball is seven points, awarded for the black.

The six colours have fixed values: yellow is two, green three, brown four, blue five, pink six and black seven. These values determine both the score for individual pots and the order used after all reds have been cleared. The black is therefore the most valuable coloured ball on the table.

During the reds-and-colours phase, a player commonly attempts the black after each red because the combination produces the largest routine scoring pattern. A red followed by a black scores eight points before any later colours are counted. In the finishing sequence, however, the black is played last and is worth seven points on its own.

The question concerns one coloured ball, not the value of a complete break. A standard maximum break is 147 because it combines fifteen reds, fifteen blacks after those reds, and the six colours in order.