If I open the 'my topics' tab there is one topic in there that keeps turning the folder yellow.  Nothing new has been posted to the topic for a while.   I can open the topic, scroll through the topic, close the topic and refresh the page and the folder goes white.   Next day, folder is yellow again.

The forum is 'outdoors' - sub forum 'hunting dogs'

ETA: Folder stayed white all day yesterday - it's yellow again today.