Sorry to hear that Lewis. Are the dog and car still alive? I think they' have been 're-cycled' by now if it was me !
Not sure about this leading edge colour thing, which I'll be mentioning in the next 'BoB Bits' post. The Jagdwaffe books, and one other publication, state that some '109s had the underside colour wrapped around the leading edge. Now, I've seen it the other way around, with the upper surface colour wrapped around below, mostly 'feathered', but this 'underside colour' may be a light grey paint, the actual purpose of which has not been discovered. This is normally seen applied as a 'soft edged' line along the leading edge of the main planes only, possibly to diffuse the colour demarcation and soften the silhouette of the wing, and is lightly applied, also diffusing the warning stencil and lines on the slats.
This light grey has been mentioned in a number of publications from the 1980s, and I asked Walter, an ex - Luftwaffe friend about this. At the time, he was getting on in years, so was a bit vague with his memory. He flew '109s in 1940, until being shot down and injured, and transferred to other flying duties after recovery, then shot down again into the Channel, rescued, captured, and eventually married his English nurse after the war.
Although he couldn't give me any details as to why/how etc, he did recall a light grey misting on the leading edges of the wings of some '109s.
I'd say the colour in the above pics is not white - no reason to be - and could be RLM65, or this light grey. Note von Werra's kite is similar.