Greasy Fork is available in English.
Configure tags to be highlighted with different colors - please install V2 of this script instead
There is now a newer version of this script here AO3: highlight tags V2.
Immediately see tags you love (or hate) by coloring them.
There is a configuration section in the script that you can edit to define your own tag patterns and the highlight colors. Just add your own line:
var tagsToHighlight = {"Alternate Universe":"#fda7d1", // pink
"Fanart":"#adf7d1", // light green
"Mpreg.*":"red", // regexp patterns can be used
"somethingelse": "blue"}; // named colors work too
