The Brother color lasers also are happy to print without color toner cartridges present.
By contrast, HP's cheaper color lasers require the cartridges to be present, and if they run out and are left in the machine, they cause banding over your printouts. This is due to their integrated drums wearing out, so you have to replace the color toners even if they're not being used (or hack around with transferring chips onto less-used old cartridges, even black ones so they're seen as colour ones).
By contrast, HP's cheaper color lasers require the cartridges to be present, and if they run out and are left in the machine, they cause banding over your printouts. This is due to their integrated drums wearing out, so you have to replace the color toners even if they're not being used (or hack around with transferring chips onto less-used old cartridges, even black ones so they're seen as colour ones).