This code will produce true color RGB, dust RGB, and natural RGB; results are saved as a png. Input datasets (L1b or L2) can be accessed from NOAA class: www.class.noaa.gov. Requires GOES-16 ABI channels 1-3, 5, 11, 14, and 15 (depending on which imagery you wish to produce).
More information on various RGB imagery and interpretation can be found on the EUMETRAIN website