In fact I began by the hand crank. It was totally froze by old oil and rust and I don't find any black paint on it. And because I only own two hand crank for three machines I painted it in black, but now I am seriously thinking to make it blue.
Concerning the wheel, it was a "poor" machine, no grapes on the plates, and a totally black flywheel. We had a discussion here and we decide to paint it blue, perhaps it was a mistake ...