Macros info, success, warning and error are only distinguished by colors, and this is an accessibility issue.

A way to fix this would be to add an icon (with an alt text and possibly a title), and/or with a text title.

A forum proposal can be found at: https://forum.xwiki.org/t/improve-accessiblility-of-the-info-success-warning-and-error-macros/13342

This is a counterpart to the XWiki Platform issue https://jira.xwiki.org/browse/XWIKI-21452