See if Citrusellaeditswikis will give you the solution they talked about in this thread.
Or just wait a day and go to WantedCats.
The links are blue based on whether they have content. In preview, they are red.
You can try using c:dev:AdvancedOasisUI. One of the features is the category redlinks.
Andrewds1021 wrote: See if Citrusellaeditswikis will give you the solution they talked about in this thread.
.newcategory { color: #CC2200 !important; }
if I have it right.