Of course, you can‘t put color over solid black but you can add color around it to have it appear as it were part of the original design. … It might not look like a tattoo that was designed to have color but the new watercolor technique would look good added to a black and gray tattoo.
Furthermore, can you put color over a GREY tattoo?
1 put in light tone of grey , add solid color over it and you will pretty much cover it. … put in solid color , add light tone of grey over it, and you will take away some of the vibrance out of the color. but the solid color will show through.