No photo I'm afraid, as the aircraft dived vertically into the ground, going deep, trying to avoid the Havoc.
However, from other photos of the period, it's certain the undersides were over-painted in black, probably washable paint, as were the Balkenkreuz, and probably the swastika. Code latter were
all black, the yellow 'S' either being replaced by black, or crudely over-painted, and the theater tail band would
not be present.
Although other Staffel and Gruppen from KG54 seem to have had the spinner tips in the Staffel colour, from what I've seen, 6/KG 54 used a yellow ring around the spinner, approximately at the mid point, although it is possible that this was also painted out.
Upper surface colours were otherwise the standard RLM 70 /71 splinter pattern.
The profile and photos below, from the 'Kampflieger' series, by J .Richard Smith and Eddie J. Creek, although from a slightly earlier period, and from 5/KG54, give an idea of what the overall appearance of the aircraft would have looked like, although the swastika was more than likely crudely over-painted on your subject.
Hope this helps.
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