From top to bottom:
Top: coppery orangey gold
Middle: gold leaf, old looking
Bottom: classic gold, brighter
The middle color was used to decorate this black clock.
I think the color used on the clock in the book was the orangey gold
and another clock decorated with Gold Leaf:
Gilded with B gilding very lightly:
This is with another gilding color, which I have labeled D:
With soft gilding in gilding color D, a very classic gold. The base color is Gray #14.
and over 75/25 Gustavian gray milkpaint:
over a strong wash:
Solid gilding with T. Base color is Gray #3: