Creating transparent thick colours
I was unsure where to post this question, but I hope that I can get some help.
I am looking to be able to paint areas of at least 1-2mm thick in a transparent colour so that the surface below is visible through it to some extent. I know that I could use resin mixed with paint, but was hoping to maybe use something that was easier and which gives off less smell. I would also like to be able to brush it on either all at once or in layers depending upon the fineness of the area.
I was thinking of mixing some acrylic paint, or gouache, with some of my Liquitex medium or even my water-based polyurethane (Varathane Diamond Finish) and then paint on the surface, but am unsure if this could crack in the future if on an item that will be handled/worn (e.g. a wooden pendant).
Would I also be able to then put another coat of polyurethane over the whole area?
I really didn't want to have to mix resins or epoxies as I do most of my work in my bedroom and I don't have much of a workspace and although a big room, it isn't always as ventilated as I would need for smelly epoxies.
Basically I am going for a look of glass over wood or foil.
It would always be done on a more rigid surface (not canvas or paper).
Any suggestions would be very much appreciated.