[clyde]

"Green" means it's in the manufacturers tolerance ranges. When the car is on the rack, the gear hooked up, and the car info in the computer, it displays the measurements and ranges on the screen. If the measurements are in the acceptable range, they are displayed in green on the monitor.

The specs set by the mfr do not include a "perfect." For most drivers in most cars under most normal street driving conditions, you won't notice any difference as long as you're within that acceptable range. At most, you may get some slightly accelerated tire wear if you're on the outter edges for toe.