I want to do this:
Take an ESP8266 and a TCS34725 sensor, to put it outside.
Now I want to have a scene mode for lights, that follows that sensor data!
(for any supported light, even on HUE Bridge)
(I really miss this and wander why Philips did not do it before)
I think you are rapidly getting above and beyond the functionality that DIYHue is going to be able to provide for you. You may want to look at a solution like Home Assistant or Hubitat. Those are more Home Automation Platforms and not just like control platforms.