RGBLED Library!
This module provides methods for constructing and using RGB LEDs with CircuitPython, no messing with PWM duty cycle or PWMOut objects necessary!
The RGB LED's color can be set with a 24-bit integer, or a RGB tuple value. Common-anode and common-cathode type RGB LEDs (and RGB LED strips) are also supported.
To use in CircuitPython, simply install the Adafruit CircuitPython bundle.
Read the docs for info on how to use it.