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

This is also available for the Firefox and Safari Browsers.

Here is a screenshot of Apex in Night Mode:

Video on Dark Mode for Chrome: