[Primoz]

Thanks a lot. If the tongue was yellow it seems plausible that some Fw 190s of JG 1 had red lower cowls. There are a few photos where the lower cowl appears very dark (as dark as the red Tatzelwurm) while the tongue looks light - so they can't be the same color. Of course, the cowls could have been orange and orange could look much darker than the normal yellow in b&w photos.

The color of the tongue is the most reliable distinguishing feature - the red Tatzelwurm had a light tongue while the green one had a darker (= red) tongue.