Has anyone used true pernambuco, caesalpina echinata, as a natural coloring for your finish work? Reds always seem to fade on most of the commercial dyes. I've got a nice very old board of true pernambuco that I don't have any use for that came from an estate last year. I cut off a small slice, added it to a glass of water, and the entire glass turned a vibrant merlot color in about two minutes. I've been thinking of making a concentrated solution and trying it for a nice warm sunburst. Has anyone ever tried this and do you know what the color fastness is? I know it was the global red color standard until aprox. 1875 when synthetic colors were introduced. Thanks for the help.