Coloring up refers to the process of exchanging lower-denomination chips for higher-denomination ones, typically after a player has accumulated a significant number of chips at a casino table. The proper protocol involves signaling the dealer that you wish to color up when you have reached a certain amount of chips. It's best to wait until there is a natural break in the game, such as the end of a hand, to avoid disrupting play. Once you communicate your intent, the dealer will assist by swapping your lower-value chips for higher-value ones, ensuring that the process is transparent and properly recorded.