I bought my 2010 Tundra by walking thru the dealer lot looking for tow mirrors as that indicated the towing package was present. The one they had in stock was Spruce Green. My credit union offered a .25% interest discount for "green" vehicles. I, of course, asked for the discount. When the loan officer couldn't find the Tundra listed in her "green vehicle list", I showed her the truck window sticker indicating vehicle color. She was not amused but neither was I as their ad simply offered the discount for green vehicles without defining "green".
I didn't get the discount.
Paul