Yes Randy you are right ; from what I remember too mechanics at le mans 64 where in white suits and ingineers ( may be chief mecanics ?) whre in white trousers and white sweats uppon white skirts ( some pics avaible of some mecanics at scrutenering and on pits on the net but don't know if they are ok to post due to copyrights)
What is strange is that there are some views also of the Nurburgring 1964 1000km of official Ford mechanics white very light blu suits
Nurburg taking being raced few weeks before Le mans