Turn Excel Dark!
In this tutorial, we learn how to put the Excel interface into Dark Mode and also how to switch a worksheet from normal to Dark Mode and back, with the click of a button, or checkbox.
This will make Excel much easier to read and will make it much easier on your eyes, especially when you are working in the dark because your boss broke the spreadsheet the day before the big meeting and now you have to stay up late to fix it... not speaking from experience or anything hah!
Excel Dark Mode (another, but less effective, tutorial)