What is an "on red" or an "on black" bet mean in roulette?

What is an "on red" or an "on black" bet mean in roulette?

Frank Scoblete (Casino Gambling Expert & Bestselling Author) gives expert video advice on: How soon before the wheel stops can I make a bet?; What are the odds of a specific number coming up in roulette?; If I play a number long enough in roulette will it come up? and more...

There are certain bets at the roulette table that are called even money bets. One of these is on red or on black. Your betting that the color of the number that's going to come up next will be either red or black. If it's red you win, if it's black you lose. However, you have two green zeros if either one of those zeros come up, you lose.