Dr. Scott's Tie (Research)

The necktie's knot position varies day to day on the set, but there is a clear repeating pattern of stripes on a maroon background:  narrow white, pencil-thin grey, narrow orange-red, thin white, and thick grey. Since neckties are cut on the bias of the fabric (typically silk or a comparable synthetic), their stripes are usually at an angle. In the US they typically slant from the wearer's upper right to lower left, but the reverse in the UK.  The easiest solution is to use fabric paint on a solid maroon necktie.