Adds CSS classes to the links generated by the Wiki page formatting
kernel, which then allow you to colorize (or to otherwise change
appearance of links) via a style sheet.
prev << "linking/link_css"
next >> "linking/link_icons"

You cannot modify the README.plugins file, but anyhow any ideas or suggestion should as usually get filed on BugReports, UserSuggestions or even better the README.plugins.Discussion.