Is there a way in Terminal to toggle Dark Mode On/Off for an individual app without affecting the rest of the environment? I use calendar on my Mac, and the appearance is dreadful. The rest of the apps look great in Dark Mode. I want to disable it JUST for that one app.
From Terminal, run this command:
defaults write com.apple.iCal NSRequiresAquaSystemAppearance true
To revert the change:
defaults write com.apple.iCal NSRequiresAquaSystemAppearance false
来源：https://stackoverflow.com/questions/52562383/is-there-a-way-to-toggle-dark-mode-on-off-for-individual-apps-in-macos-mojave