Some great info there Antoni. That’s some recherche you have done. Its odd that the Kampfflieger book you mention only mentions white bars. Classic colours Vol 2 of the Luftwaffe camoflage and markings, which was only printed a year after the Kampfflieger Vol 2, does mention white and Pink. Of course these books are by different authors, but still.
All goes to show just how complicated the study of anything to do with the WW2 German military can be.