The main point of the highlight plugin isn't to put something in red but to emit a different notification. That's why we set the property. Ideally this means porting the text-ui notifyAboutIncomingMessage to take a KTp::Message object Putting your name in red doesn't really achieve anything, I know what my name looks like. Adium themes have a special class that should get set. Reproducible: Always
This is fixed in the notify filter that checks this property.