Yes, this adds a lot of complex control circuitry to your lightbulb - a microcontroller ($0.50 will get you 8-bit and 16-bit CPUs, and there are probably ARM CPUs for under $1 by now), and some kind of radio or sound or light sensor for signalling (also no more than a few bucks), and a 1/N share of the cost of the remote control (which only needs to cost more than $5 because a $200 home automation system needs a fancy GUI and lots of user interface development.)
I might very well want to set different light bulbs in different rooms to different colors, to coordinate with the paint colors and the lighting needs of the various activities we use those rooms for. I'm not in their target market demographic, but having recently had to pick paint colors for my living room and seen how radically any color we tried changed depending on the lighting (direct/indirect sunlight, different kinds of incandescents, compact fluorescents, and cheap LEDs) and even depending on the color of adjacent walls/furniture - human color vision is an amazingly weird and twisty system - I can see that some people might very well want to have their lighting change its behaviour based on time of day.
On the other hand, I'm definitely in the target market for a cheap LED replacement for 150-watt incandescents, and for that matter for 100-watt; most of the cheap LED market is still for the 40-to-60-watt incandescent replacement.