Board Thread:Support Requests - Getting Technical/@comment-24.188.200.145-20180219081902/@comment-9605025-20180326214255

Since you appear to be using europa portable infoboxes, yes; you must include that in your CSS. If you are using "theme" in the infobox tag, replace "NEF" with the value you provide in the infobox. If you are using "theme-source" in the infobox tag, replace "NEF" with the value you want the split color to appear for.