AppData says 460,000 active monthly users[1]. The original VentureBeat article quoted AppData at 440,000, which is where the ~400,000 number is coming from.
Edit: In reply to the grandparent, because of the huge amount of money Color raised, they would need to make something like ten thousand dollars per user at their current user numbers to meet expectations. Since that's obviously impossible, it makes sense for them to avoid revenue entirely until their user numbers hit eight digits at least.
Definitely not active. Can't be. I signed up. Used it 5 times to get a prize from some contest (never got it) then never used it again. I mean, the idea is cool but it doesn't seem like there's much interest in real time broadcasting. There's too much information flying at us and we're all too busy to remember to tune in to our friends' video streams live or even stumble across them by accident.
I don't really like Color just because its just not my thing but I don't quite get why everyone here hates them so much. There's a lot of vitriol spraying all over the place around here. Is it because they're super hyped and overvalued? I hate to break it to everyone if it is but most startups we read about here are overhyped and over valued. I don't get it. Seriously, I mean I get why people don't like Color but why does it seem everyone just hates them pretty severely around here?
Edit: In reply to the grandparent, because of the huge amount of money Color raised, they would need to make something like ten thousand dollars per user at their current user numbers to meet expectations. Since that's obviously impossible, it makes sense for them to avoid revenue entirely until their user numbers hit eight digits at least.
[1] http://www.appdata.com/apps/facebook/200067376723055-color