The colors silver and lead are not a deal breaker. Lead covers not almost, I do not like. This was an attempt, the next time I buy again individually the colors.
I, the experiment with antique gold started on an old wooden plate, which was free of grease. The first picture shows the old wooden plate, the second image the plate after a time brushing. Although the wood was absolutely clean and receptive, covers a time strike from not enough, so you need quite a bit of paint and more layers. The one may still accept a monotonic object that but you can not accept, if you paint a picture. Since the first brush stroke has to sit or the image is messed up. I need colors with higher opacity than they are here. I had applied the paint undiluted, more is not at once strike.