I've been looking at a lot of painting frames that are antiqued. I'm wondering about what materials are traditionally used for this. Is it tinted shellac, tinted varnish, asphaltum, a combination of many? I have been oil gilding some of my small wooden sculptures (rsg, gesso, shellac, oil paint, size) but I might like to create some more depth or variety to the finishes instead of a strictly shiny gold object.
Any specific recommendations?