If you just want the anchor color to stay the same as the anchor’s parent element you can leverage inherit:
a, a:visited, a:hover, a:active {
color: inherit;
}
Notice there is no need to repeat the rule for each selector; just use a comma separated list of selectors (order matters for anchor pseudo elements). Also, you can apply the pseudo selectors to a class if you want to selectively disable the special anchor colors:
.special-link, .special-link:visited, .special-link:hover, .special-link:active {
color: inherit;
}
Your question only asks about the visited state, but I assumed you meant all of the states. You can remove the other selectors if you want to allow color changes on all but visited.