So, I use the Circadian app with a virtual bulb and [PRERELEASE] Virtual Prestaging to manage the CT changes. Basically, I have the Circadian app control a CT virtual bulb. I then use the Virtual Prestaging app to have the virtual bulb control the real life bulbs. This works wonderfully because the CT is constantly changing in the background even when the lights are off.
From there, the Virtual Prestaging app has a disable option when a switch becomes active. When I want to use colors on the real bulbs, I have the disable switch come on. This allows the Circadian app to keep going on the virtual bulb, but I control the colors. When I'm ready to go back to the Circadian, I just turn off the disable switch. You could create a rule to turn on the disable switch when a mode becomes active. This would allow the bulbs to shift to RGB as desired. You could then create a second rule to turn off the disable switch when a different mode becomes active and when you want the Circadian color temperatures.
