Dynamic Dark Mode
Dynamic Dark Mode is the app you are looking for to power up Dark Mode on macOS Mojave and beyond.
Instead of looking for the switch for dark mode in System Preferences, just click the icon in the menu bar. Ever felt your eyes getting hurt because the screen is so bright in the night? Have to worry no more, we Dynamically enable dark mode in dim lights, after sunset, or just anytime. When you wake up in the morning, it'll a be another bright day.
brew install --cask dynamic-dark-mode
Didn't work? Try this if you have an earlier version of Homebrew
brew cask install dynamic-dark-mode
Dynamic Dark Mode - the smart, automatic Dark Mode toggle for macOS Copyright (C) 2018-2021 Zhiyu Zhu (@ApolloZhu) This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.
This is not quite what you are looking for? Here's a non-comprehensive list of options you could try:
|Daylight Schedule||Custom Schedule||Ambient Light||Touch Bar||Shortcut Key||Menu Bar||CLI||Per App||Localized|
|macOS Dark Mode, Auto|
|Dynamic Dark Mode|
|darkmode by katernet|
|dark-mode by sindresorhus|
|f.lux (night shift)|
|Shifty (Night Shift)|
|One Switch (multi-tool)|
* Dynamic Dark Mode uses screen brightness, and requires "Automatically adjust brightness" option enabled in System Preferences for ambient light based changes.