Any advice on dyeing/coloring rubber soles of shoes? I soaked a pair of canvas vans in fabric dye because they got a bad stain and now the sides of the previously white soles are stained purple (dye was black). A sharpie would look crappy and i don't think fabric dye will absorb in the rubber enough make them a solid or predictable color (looking for grey, black or white).
If the color isn't deep you can try sanding off the top layer.
Result (Click to show)
Very nice work, looks new