Design/Link colors

Examples
[actual links. Using the order per table above, using links you've probably not/probably visited.]
 * unvisited (don't click!)
 * local: Category:Extensions/de-formal
 * interwiki: foobarbang
 * external: https://www.example.org/123
 * visited (click these, if they're not purple)
 * local: MediaWiki
 * interwiki: Main Page
 * external: https://en.wikipedia.org/