For job status yes
red = not active
yellow = starting or stopping jobs
green = active
For the user stats it's not so different, except yellow means recently inactive (hasn't sent anyting in in xx amount of time) red comes after that at however long jobs havn't been sent in. (I'm not sure on how long it is, I think yellow is 1 week, red is 2 weeks, but I'm not 100% sure on times)
Found it, hit explain on the stats page (or click
here )
yellow is after 48 hours, red is after 14 days