How to set color scene

[Kinshuk_Makkad (Kins)]

Virtual Switch/Bulb with Dimming and Color (Virtual Hue Bulb)

Yes, these already exist. I would use “Dim with Me” a community app by @twack that lets me turn on a set of lights and dim then based on the settings of the master switch. For color I would use “Color Coordinator” which sets color based on a master switch/light. I could probably write a new smart app and merge the code for these two to make a single app.