color and brightness attribute of bulb devices are always 000000 and 0, respectively

[danielkwalsh]

After logging in, I use the bulb service and the get_bulbs method to get a list of bulbs. I find the one I want, and can turn it on and off, which is great, but when I use the brightness and color attributes, they come back as all zeroes, even when I can clearly see that I've turned the bulb on to non-zero brightness, and its color is not black.