(it needs some bugfixes/improvements to work properly, though.)
What's the ETA of this colored coins implementation?
I do not know, but here is their thread https://bitcointalk.org/index.php?topic=106373.280
Anyone knows if Ken is also looking at Mastercoin? It seems to me that they are both potentially good options (colored coins and Mastercoin).
There is also something new called 'bitshares'. Something similar to mastercoin it seems, except it is a new cryptocurrency based off of RAM mining, so it's very different in that regard. It's an interesting project by Invictus Innovations, I've heard the interview from Let's Talk Bitcoin. They're trying to develop a decentralized anonymous internet and a decentralized securities market. It'll probably be a while though.