Improoved Brake Lights

I also have an idea for improving the brake lights on transportation vehicles. When you apply the brake in the car, normally your break lights shine the color of red. But all that tells the person behind you is that you indeed are braking. But what it doesn't tell him or her is the speed at which you are slowing down. This problem arises especially in elderly people, who can not notice or react as quickly to decreases or increases in speeds. But what I think should be implemented into brake lights, is a series of colors that indicate the amount of pressure that you are applying to the brake. If you are lightly tapping the break, the color green would shine in the place of the normal red. If you are braking at a moderate speak, then the color of yellow would be displayed. And if you are slamming on your brakes, the normal color of red would appear.