I know you have added it for mobile but the desktop apps need it too!
The mac app is one of the last apps I have that doesn't support dark mode. I feel that it's a must-have feature for those of us working late at night. My eyes would thank you!
I noticed there is a similar thread for windows open since Oct 2019 - https://community.pandora.com/t5/Feature-Requests/Dark-mode-on-desktop/idi-p/3247