In Roulette, the colors red and black represent the two primary categories of even-money bets. Betting on red or black is significant because it offers players a nearly 50% chance of winning (excluding the green zero or double zero). This type of bet is popular among players seeking lower-risk options, as it provides consistent payout potential. The psychological impact of choosing colors can also influence players' strategies and choices, adding an element of excitement and engagement to the game.