Dark Mode Pro for Safari is a nice Safari extension that will change your websites to Dark Mode for better reading.
How to use it:
- Install the application and run it
- Hit the Open Safari Extensions button
- Tick the box near the Dark Mode Pro for Safari Extension
- In Safari you will see a nice looking button usually located near the address bar where you can toggle on or off the night mode.

For any help please email me at: [email protected]