My Hue B Smart service manager should do the trick.
can I choose the exact color instead of using one of the presets from smartlighting?
- The app converts all color info and sends Philips’ recommended XY colormap data (for consistency). The app can handle colors using Hex, Hue/Saturation, and XY colormap formats.
is there some way in smart things to just change the color of the bulbs (without turning them on) at a specific time?
- The app now allows you to send hue & saturation to a bulb or a group that isn’t on - the device will save that data for the next time it receives an on() or setLevel() command. Using CoRE with it should do what you want.