Apparently you think so. Unless it?s your contention that Oswald had his shirt open and no jacket on when Markham allegedly saw him.
That information was supplied in my post (edited from a BillB post) here. Guess you missed that.
The jacket was open. The tshirt was white.
One can imagine Oswald opening the long-sleeved shirt as well, given his quick walking/jogging/trotting/running tour of the Tippit scene and environs.
Mrs. MARKHAM. He had a jacket on when he done it.
Mr. BALL. What kind of a jacket, what general color of jacket?
Mrs. MARKHAM. It was a
short jacket open in the front, kind of a grayish tan.