The best way I know to do it would be with a “Magic Wash” which is made from Future Floor Wax (thinned 1:3 with water) and some black ink.
The Magic Wash dries shiney, even, and rock hard (though it takes some time).
You can achieve a similar result with thinned acrylic (like Tamiya) paints and a drying retarder (sometimes called paint extender).
