I think I'm going to try something like this later today:
Code:
myRobot.SetInvertedMotor(myRobot.kFrontLeftMotor, true);
myRobot.SetInvertedMotor(myRobot.kRearLeftMotor, true);
myRobot.SetInvertedMotor(myRobot.kFrontRightMotor, true);
myRobot.SetInvertedMotor(myRobot.kRearRightMotor, true);