diff --git a/wallabag-ecosystem.md b/wallabag-ecosystem.md
index 1a050ad..03e7770 100644
--- a/wallabag-ecosystem.md
+++ b/wallabag-ecosystem.md
@@ -64,6 +64,7 @@ Some softwares which are compatible with wallabag:
 ## UI 
 
 - Readable Dark wallabag: https://userstyles.world/style/8721/readable-dark-wallabag
+- add colors to tags with pure CSS: https://kdecherf.com/blog/2021/05/15/wallabag-add-colors-to-tags-with-pure-css/
 
 ## Development