The Philips Hue bulb is the only one I'm really aware of, but I didn't think they were cheap. From the post it sounded like he was using something similar to the Hue bulbs but much cheaper.
Definitely not the Philips Hue bulbs. Those use a REST API on port 80 for network control, whereas these bulbs are using a proprietary binary protocol on port 5577.
From what I've been able to find about the Philips API, there's also a modicum of authentication while these appear happy to accept input from anyone on the network.