[anyfoo]

A somewhat recent update to Hue bulbs lets you set up what they should do when they receive power, including the ability to tell them to just revert to the previous state. As stated in another comment however, I prefer them just turning on at (almost) full brightness, as I use the regular switch for turning them on when coming into a room.

[TeMPOraL]

Thanks for letting me know. I still have one Hue bulb in operation at our current place, though I unplugged the Hub and just deal with the ugly orange. This will be a good motivation to finally update the firmware (which I was avoiding for the past year), so that I can just fix the default color.