A Korean War era tank owned by the West Virginia National Guard has turned bright lemon-lime yellow. The reason was a mystery until the sponsor of a science fiction club at Bluefield State College owned up to the mistake in a letter to The Bluefield Daily Telegraph. Jerry Conner said the U.S.S. Yeager Chapter of Starfleet International has been cleaning and painting the tank for about 20 years, and took a color sample to a local paint supplier, aiming to match the sample with two gallons of fresh paint. “We were worried when we opened the containers and found something nowhere near our sample,” Connor said in the letter.