What is the "Holy Grail" of Luftwaffe Research

[PhilippeDM]

What about that mythic colour picture of the III/JG2 black 6+I Fw190D with Ta152 tail Wnr. 600545...
Should have appear in a documentary about the Hitlerjugend on the Belgian Televison
Should have been published in a 3 volume work, covering Kriegsmarine, Wehrmacht and Luftwaffe and having at least one colour section
What about some clear and better pictures of Karoband Bf109s, Fw190A (I know, one exist) or D,
What about pictures of Fw190D from JG6 with the red/white/red bands (I concur with John's grail here)
...