So they forked this library and modified the pinout there. However, that fork is ancient, so I strongly suggest to use this original library instead. You can choose the Adafruit pinout with a command line flag.Just pass the option --led-gpio-mapping=adafruit-hat. This works on the C++ ...
Default pinout LED output (SK6812/WS281x):GPIO2 for Data LED output (SPI LEDs):GPIO3 for Data, GPIO2 for Clock If multi-segment mode is enabled for SK6812/WS281x, the output for the second segment is always the next GPIO pin (OUTPUT_DATA_PIN+ 1). ...
Switch the Pinout Improving flicker 64x64 with E-line on Adafruit HAT/Bonnet CPU use Limitations Fun Controlling RGB LED display with Raspberry Pi GPIO A library to control commonly available 64x64, 32x32 or 16x32 RGB LED panels with the Raspberry Pi. Can support PWM up to 11Bit per chan...