Using the INT is a good idea (I was thinking an extra IC), but now that you mention it, having both white & UV could be useful to others as well.
I shouldn't have put the word "spectrum", but rather (color) "temperature" (what I'm using the sensor for, roughly calculated from the RGB intensities). To truly read a spectral response would require a prism/grating and a linear monochromatic sensor (and calibration).
A Core Stack module that can accept power via USB-C PD, controlled via I2C and dip switches, with option to route power over HV.
On board 5v regulator to supply system power from USB-C input.
Connector for external use of USB-C PD power.
Dip switches could be:
1: Off = HV Disconnected, On = HV Connected to USB-C PD Output
3 other dip switches:
000 = I2C Mode (full PPS control)
001 = 5V
010 = 9V
011 = 15V
100 = 20V
101 = 28V
110 = 36V
111 = 48V
It would be nice if there was a revision of the color sensor that allows the LEDs to be turned off/on (via I2C). So it can be used for measuring a light source's color spectrum (leds off) as well as an object's color (leds on).
SparkFun makes something like that: https://www.sparkfun.com/products/15164