I took some 'coal' black Eco-Flo dye and coated the parts shown. When it dried, I polished the top layer with a piece of sheep wool (clean). Then I took my Eco-Flo black antique gel and coated the pieces again. This will ensure that the color comes out true black. This has worked for me on several projects. Some other information that I have worked has been to use blue as a base coat and black on top. Stay tune!