I first experimented with tinted finshes when I built a large order of custom windows and doors out of white oak. The prospect of staining all these windows and topcoating them was a daunting task. i decided to tint shellac with Behlins alcohol base stain ( this was of course on the inside only) and spray it on. I quickly learned not to stay in one place too long or the finish would build and the color would get darker. Wow what a way to finish! Even if it got darker in spots it added some character to the finish, almost like the finish on a gibson guitar. Now I have started using Sherwin Williams lacquers with the behlins stains with excellent results. The depth of the color is very good with no muddy look. have you ever tried this method?