A highlightable ink including a colored pigment and an eradicable
colorant; a kit including the highlightable ink and an eradicator
solution; an ink complex including a colorless or substantially colorless
eradicable dye selected from the group consisting of diarylmethane
derivatives, triarylmethane derivatives, and methine dyes, and a colored
pigment; and methods of applying an eradicator to at least a portion of a
marking made with a highlightable ink, are disclosed herein.