Thread:Veenster7/@comment-5558012-20170306031244/@comment-5558012-20170307025953

Not really (the usual method is Special:Whatlinkshere but considering they don't appear in MediaWiki styling pages, not helpful - Ctrl+F can help). For these two just add the image, positioned to the right and "Used in MediaWiki:Common.css and MediaWiki:Wikia.css. Image added on file page to prevent its appearance on Special:Unusedimages."

Oh, that reminds me, I didn't look at JS files either yet.