hard to duplicate what time has done.
R-Bo has made a very true statement here. I've tried myself to do a rust or patina effect on the Blue Funk. The technique I use is similar to an paint technique using various hues and stain or dabbing with something like Rusty Metal Primer. When I've done murals and ojects for the community theatre, the effect is convincing. However, the audience is at least 15 feet away and lighting helps to enhance the effect. On the Blue Funk, in the light of day, the result was too "cartoonish". I ended up painting the Blue Funk with a flat paint color. It gives sort of a sun-bleached look of which I'm satisfied.
There's a fellow artist in the next town from mine who does these patina and rust effects, with pretty good results, on his antique truck. His truck is a Ford, circa 1950. His technique appears quite convincing passing him on the road. However, close up you can tell it's a obvious painting technique.
Cool discussion! Great perspectives and links!
