Colour coding blog posts

If you can arrange your permalinks so that you can categories your links based upon then matching a specific phrase, then you will be able to have a filter add a distinct class to the link, and with custom css you will be able to add a distinct color to each category.
For example suppose my categories were: animal / vegetable / mineral, then have each post have a permalink which contained “-an-” / “-ve-” / “-mi-“, register a filter upon links, find any of the above snippets in the link and then add a class or “link_an” / “link_ve” / “link_mi” to the link classes. Then in your custom css have sections like:

a.link_an { color: red; }
a.link_ve { color: green; }
a.link_mi { color: orange; }

First from your dashboard set your permalink style, Dashboard > Settings > Permalinks, choose a style which includes the post title, OR the category name (which has your recognizable text in it). Click SAVE

Then when you edit each POST there is up near the TOP the permalink, you can EDIT it and incorporate the snippet of code the filter will sense, and save it, OR you could assign CATEGORIES. You use this link text anywhere you want to create a link to that POST, the same applies to PAGES too except that they don’t have categories.