Well the one with the red rudder seems inaccurate. It has no yellow under the chin, but then masks it off so there's no red either. I mean, c'mon i'd have one or the other, logically. That leads me to think there was a B&W picture and the guy interpreted it as lichtblau instead of yellow. I say go with the half yellow chin, red nose, yellow rudder, and no yellow wingtips.
The Yellow chin because it seems most likely. The yellow rudder because a red rudder is almost unheard of. Yellow and white were far far more common. The "no wingtips" because of the decal profile. Decals aren't perfect, but they can lead you in the right direction sometimes.
So there ya go, red nose, yellow chin, yellow rudder, lichtblau wingtips. That's my opinion.