If your screen is too bright and you would like a darker theme that is easier on the eyes, you can add extensions to your browser to change the colors that you are viewing.
If you are using a Windows device, there are themes built into Windows to help with the colors and fonts that you see on your screen. The following link contains information and a short video on how to Personalize your settings in Windows - https://blogs.windows.com/windowsexperience/2019/04/01/windows-10-tip-dark-theme-in-file-explorer/
Dark Reader is an extension you can add to your Chrome Browser to set your browsing to a dark mode. This has options to control brightness, contrast, etc... This also has options to create a list of sites that you want to invert or not invert.
Click the image above for the full help section on this extension.
Chrome Extension: http://bit.ly/31Y31pq
Here is a screenshot of Apex in Night Mode:
Video on Dark Mode for Chrome: