It seems like the plugin is not installed in your site. You need to install the plugin.
Link:- https://moodle.org/plugins/atto_morefontcolors
Regards,
Purnendu
It seems like the plugin is not installed in your site. You need to install the plugin.
Link:- https://moodle.org/plugins/atto_morefontcolors
Regards,
Purnendu