Hi, Yes i think a black base colour and then maybe a green wash here and their to give it a patina. Finally a light dry brush of bronze to high light the highest part. Just make sure they are dry and you could use waterbased paints. I also like the look of them in White.
Oh! I didn’t think of green! I was thinking brown but green sounds even better. I’m pretty attached to their look now as well. 😆