!roulette [amount] [option] : Command for viewers to enter bets. Available options are:
“r” or “red” means you are betting that the winning number will be red. You stand to win 2x of your bet if you win.
“b” or “black” means you are betting that the winning number will be black. You stand to win 2x of your bet if you win.
“e” or “even” means you are betting that the winning number will be an even number. You stand to win 2x of your bet if you win.
“o” or “odd” means you are betting that the winning number will be an odd number. You stand to win 2x of your bet if you win.
“g” or “green” means you are betting that the winning number will be green. There is only one 0 on the wheel, so this is a risky bet, but it also comes with a huge payoff of 35x!
“number” means you are betting that the winning number will be a number. So this is a risky bet, but it also comes with a huge payoff of 35x!
Source:
http://wiki.deepbot.tv/roulette