Philippe i post the link from JCM because it's the only one i know on the web... I saw in "
Couderchon, P., 0ct/Nov 2005: Aviation Française Magazine N°6 " one of the color picture from R.Goyat colection and the white swastika is quite clearly there... You perhaps not found it again recently simply because it was erased during the the 1970 cleanning work done before 120015 was repainted as yellow1... I suppose the aircraft was pretty well cleaned only with the most important markings kept untouched...
The photo from 120223 at Leck with a green fin on it's right side is visible inside
"Myhra David, 1999: Heinkel He 162 – X planes of the third reich series, Schiffer Military History, Atglen, 96p."
To wait until 2008 will be a long time to wait 