Just for fun, below I present some images by Wootton along with a few by Rembrandt who also was no slouch when it came to metal.
The Wootton images are photos of details of paintings I saw in the Royal Air Force Museum at Hendon, just north of London. Lighting conditions were poor, and protective material affected color and allowed reflections, so keep in mind that what you're viewing is an approximation.
Note how Rembrandt deals with the effect of light on warm gold and cool steel.
Here he deals with steel. I'm not sure if the painting has been cleaned and colors are original or if the yellow hue is due to old varnish.
An earlier painting, but one I find particularly impressive because he depicts brushed steel convincingly.
This is a tiny part of a much larger Wootton painting and might be close to actual size when viewed on a desktop computer screen. The aircraft is a Sopwith Camel with metal at the forward part of the fuselage. Note how he shows reflections. Also the effect of light on the gunsight in front of the cockpit windscreen.
The darker zone is actually a shadow of Yr. Loyal Blogger on the protective glass or plastic. The forward metaled area reflects the sky, the upper wing and the mountainous terrain below.