And a link to a 1958 article in Flight on the formation of 1 AEF at Biggin Hill. Unfortunately, the photos are black and white, but silver and yellow was the standard colour scheme for RAF trainers at the time.
https://www.flightglobal.com/pdfarchive/view/1958/1958-1-%20-%200834.html
Rolls of dayglow sticky back plastic were IIRC, about 2ft wide and several yards long; you cut to size/shape, peeled off a backing sheet and applied it to the airframe/car/bone dome etc.