I recently bought several colours of metallic acrylic paint from the local pound shop. Normally they don't have anything particularly useful that I am after at the time but with how expensive some paints can be, I thought I would give them a try.
The photo doesn't do the colours justice, they are a little duller when you look at them. I have tried painting some of the wooden items and the copper colour looks best but, I am going to try dirtying them and think about what I can put in them. I think the bowls are going to be useful for the tower but they need more work.
At least I have seen the paint effect on wood. The colours will need to be considered very carefully for them to be used in the correct places.