userstyles.org - Red:visited -- Mark visited links Red (*DM)

Provide distinctive red coloring for visited links on all sites.

An alternate style Red: Mark visited links as read on unruly domains (16842) limits the change to a few commonly used domains that do not provide adequate color changes between visited and unvisited links such as Google, and some of the Mozilla and MozillaZine sites.

For some additional effects involving red dashed outline around links when hovering, green dashed borders around no-follow links, and cross-hair cursor for links that open in a new tab/window see No Follow links, mouseover id of other links (DM*) (10987).

Have simply incorporated "red:" bookmarklet as a style. The bookmarklet version can be obtained
at [*] look for "red: Visited links to RED for visibility" and give the bookmarklet a keyword of "red:". The bookmarklet can be used on site for a temporary change instead of using a style.

An alternative suggested by Bob Jamison would be to show a red Unicode character to the left of a visited link so as not to disrupt t