I tend to monitor a large number of remote agents as part of my day-to-day checks, but I'm usually looking at 24 or 48 hour views of the graphs.
Packet losses obviously show up on these as red lines.
However one site I monitor had ISP issues in the past, where they were getting disconnected for mainly between 10-20 seconds, but sometimes a little longer 30-50 seconds (I ping on a 5 second basis).
I couldn't see these disconnects (the grey lines) in the 24 hour views - I had to move right down to 1-3 hour views to spot them, but it was really difficult to actually see them as the grey does not contrast much against the pale green and yellow.
In order to make it easy to show to the ISP, I saved the image and edited it with Paint to recolour the grey to be a bright green.
Could we get some customizable options for the various colours in a future release please?