With a Persona, traffic light buttons disappear (but are still clickable)

```
Probably in the section where we fixed the NSBezierPath problem we should just 
call HIToolbox to redraw them? It seems like they get overdrawn somewhere. 
Cosmetic but distressing.
```

Original issue reported on code.google.com by `classi...@floodgap.com` on 17 Oct 2013 at 12:15
