Coloring scored edges

Unlike solid cardstock papers, printed papers often have a white paper core. When you score along the paper to make a crisp edge, the white core can show. As expected, the scored lines showed readily since the paper is black printed on white paper and any exposed core showed as a white line. I ran a grey marker along the scored creases and exposed edges to mask these white lines. Here was my test scrap, used to find which of the various markers I had would be the best color match.