Roulette is a popular casino game in which players bet on the outcome of a spinning wheel. The wheel is divided into numbered slots, and each slot is associated with a color. The colors used in roulette are RED, black, and green. The solutions to the crossword for the term 'roulette color' are RED (3 letters), ROUGE (5 letters), and NOIR (4 letters). RED is the English translation of the French word ROUGE, and NOIR is the French word for black.