On Wednesday, January 27, 2016 at 6:51:28 AM UTC-5, Jim Kellett wrote:

Another study, on mirrored surfaces, was "Glider Conspicuity Trials Held at RAF Bicester in June and October 2002"

This study also tested orange and found no benefit.

Here is the .pdf

http://www.dg-flugzeugbau.de/Data/gl...uity-study.pdf