Psychology of Colors

Today I took an odd bus ride, mainly because I didn't feel like walking in the cold from the comm building back to Gabaldon, in my flip flops. (basically, I keep running out of socks, I need to unpack some more it seems.) They've got a new bus for the NAU bus line apparently, and I think it either is supposed to be, or was at one point in time an airport shuttle. The door is in the middle of the body, instead of up front, or instead of there being two doors.

The most odd thing about it though was the eerie green color on the inside of the bus. They used fluorescent tubes that had a plastic cover with a green film, casting the eerie green glow. I wonder if there's a specific reason the manufacturer of the bus would include that, or even have it as an option. Do people who ride airport shuttles get angry? Does the green give them a sense of calmness added to the feeling of "going", as though to make them feel like they aren't late?