People who started it wanted to create an organization of some sort, but it didn't work very well, and basically I was the only permanent team member.
So I worked on it on and off for about a year. (Since September of 2012, when I made the first prototype.)
Until July of 2013 I treated it like a gig, but then I noticed that BitcoinX isn't going anywhere (lead developer of WebcoinX which was supposed to take over development sort of disappeared), but there is a demand for this technology, but nobody is doing it right.
So since July it is, like, my main occupation.
Still, progress have been slower than I expected: I wasn't able to recruit more people, and I had to split my attention between two projects: WebcoinX and NGCCC.
(In retrospect, I should have focused on NGCCC. My hope was that we can quickly make a WebcoinX demo which will help to popularize colored coins, but it looks like colored coins need a robust implementation more than they need popularization. On the other hand, I previously had some bad experience with ArmoryX.)
So the currently status: we are working on it, it is slower than expected, but there is hope that something will be available this month.
Also, as I mentioned elsewhere, sponsors are willing to provide 200 BTC to fund development, so that's not a problem.
I've recently written an article about the theory of colored coins, it summarizes how it works on the low level, but with a dry language. I also plan to write an article about practical aspects of it, like color definitions/asset definitions, trade, issuance and so on. Meanwhile, all this information is available in bitcoinX group archives, but you have to dig to find it.
NGCCC: We have coloredcoinlib and CCoinDemo prototype, but this prototype isn't adequate, and I'm currently designing a new core. You can see preview here. Working version will be available in a couple of days.
WebcoinX: The plan was to implement a demo first, and to improve it to make it work on mainnet second. Demo is almost complete, but there was no development in last couple of weeks. [url-https://trello.com/b/n4qoNDDI/webcoinx]Here's TODO list[/url]