Yves, I agree that Clostermann's book is unusually well written, among pilot biographies. There is another quite famous pilot biography which has been translated into Swedish. The language in the original language is just terrible - on the level of a 5th form school kid. But the Swedish translator turned it into a beautifully flowing language. I don't really know what I think about that.
I have to correct you, if you allow, Yves. I never said (in my Graf-Grislawski book) that there never was such a yellow bird; all I said was that Graf didn't fly such an aircraft, and that Graf wasn't shot down on the date in question (and that Graf never commanded JG 2). I am no expert on camouflage and markings (I leave that to the best expert around, Claes Sundin, who does all the profiles for my books), so I can't say if there ever was an all yellow Fw 190. Maybe there was, maybe there wasn't. Rabe Anton probably knows far more on the topic than I do, and I find his reasoning to be quite logical. But as far as I am concerned, it can't be totally excluded that there ever was an all yellow Fw 190. We all know that some of the German fighter aces were real crackpots, and some of them did really crazy things. Having an aircraft painted all yellow would be extreme, but I wouldn't be too much surprised if I would hear that one of those crazy guys had done that. And it wouldn't be the craziest thing I have heard about WW II fighter pilots. . .