What do the various colors of DS1’s LED indicate on Mac?

After connecting the DS1 via USB, open the playback software, navigate to the Preferences, and DS1 is selected as the audio output device. By default, DSD is not supported. Enable the DoP mode.
LED displays different colors to indicate the sample rate of audio data.
Green = 96kHz; Red = 44.1kHz; Blue = DSD;
Click the volume up and down buttons simultaneously once to switch to high impedance mode
Yellow = 44.1kHz; Cyan = 96kHz; Purple = DSD;