Lynnette

I am trying to help a friend put logos on her mugs. If we use underglaze, well the logo will be under the glaze and not as clear. But if we could use overglaze- we can color the mug and then put a sharp, visible logo over the glaze. I know the basics of silkscreening- but I don't know where to buy or how to make overglaze. Has anyone else done this? thanks!