How to disable Google Chrome Dark Mode?

Use Command

defaults write com.google.Chrome NSRequiresAquaSystemAppearance -bool Yes

run this in Terminal will do.

Disable dark mode of other app

If you want to disable the dark mode of other application you'll need to get the Bundle Identifier first.

osascript -e 'id of app "<App Name>"'

This will get the Bundle Identifier. Use the following command to disable dark mod of it.

defaults write <Bundle Identifier> NSRequiresAquaSystemAppearance -bool Yes

If you want to enable the dark mode of it again

defaults delete <Bundle Identifier> NSRequiresAquaSystemAppearance

will do.