I see there are exit nodes listed at http://torstatus.blutmagie.de/, but there are some colours on the Bandwidth bars (green/pink, black).
What do they represent? Do they represent how much of the bandwidth is currently being used?
From my understanding the color coding is as follows:
Maybe there are more colors for relays which have more than 50000 KB/s bandwidth. Currently there is no such relay. So I can't verify this.