Maroon. This ball is a more of a burnt sienna color. It is a decorative brown, like many woods. The Ivoryline balls set the standards for pool balls of today.
There is no game of pool practice, so there are no red balls. The 3 and 11 balls are red in the game of pool however.
13
There are seven striped balls in billiards.
7, The 9 - 15 balls are striped.
So you can tell which is the cue ball
Depending upon the game, there are from 7 to 21 colored balls.
Zero. There are no points in conventional pool games for any balls, although in straight pool, a point is scored for each legally pocketed ball, regardless of color.
15 in a regular game
Pool balls are made of a phenolic resin. This comes from a mix of phenol and aldehyde.
The number of balls depends upon the game. All balls use a cue ball plus 7, 9, 15, or 21 numbered balls.
Friction. The movement of the rolling pool balls does no damage to the pool felt. However, the pool balls accumulate pool chalk that is very abrasive. The pool chalk accumulated on the balls and dropping on to the felt both result in tearing of the felt fibers as balls are struck or slide on the table. Occasionally balls bounce or are jumped on the table, resulting in even more damage. Damaged felt is a part of playing pool.