You are a bus driver at a station. 12 get on the bus and one gets off. You drive 11 miles to another station where 2 people get on and 2 gets off. You drive another 11 miles only to get 20 people on and 7 people go off. Next you drive 5 miles while 10 people exit the bus. You drive back to the place knowing that a couple more stops along the way until the ride is done. At the 2nd to last station 7 people get on and 3 get off. And at the last station (7.5 miles) 20 people get on for no reason and 2 gets off. What is the bus drivers eye colour ?