We use GY-302 I2C light detector. We got it with pins, but we don't need pins. We solder thin maylar isolated wires.
Fig. 2.01 Light detector GY-302 (BH-1750 chip).
We made box for GY-302 and RGB LED WS2812
Fig.2.02 Box for LED and GY-302.
Fig. 2.03 Box with LED and GY-302.
Now we can make som experiments with color.