Getting Light Text on a Dark Background
By default, most software shows dark text on a white background, much like old-fashioned ink on paper. However, many prefer the exact opposite, light-colored text on a dark screen, and find it easier on the eyes. Who wants to stare at a bright white screen in a room with the lights off?
From Windows' setup menu to all three major web browsers to social media sites like Twitter, many programs and web tools offer ways to change into what they call either Dark Mode, Dark Theme or Night Mode. Here's how to get light text on a black background in over a dozen popular PC and web-based apps.
Turning on Dark Mode in Windows 10
To enable dark mode in Windows 10, right click on the desktop and select Personalize. Click Colors in the left pane. Then scroll down and select Dark under Choose your default app mode.
Entering Windows 10's dark mode makes all of the operating system's setting menus have light text on a dark background. You can control the color of the icons by choosing an accent color in Settings->Personalization->Colors.
In current Windows 10 Insider builds, enabling dark mode in the settings menu also turns it on for File Explorer. However, if you don't want to run an Insider Build of the operating system, you'll have to wait for the next major update.
Microsoft Office Menus
If you want all of your Microsoft Office apps to turn dark, all you need to do is open one of them (ex: Word), navigate to the File tab, click Account and then select Black from the Office Theme menu. These settings will affect the menus in Outlook, Word, Excel, PowerPoint and more.
Even if you change the Office theme to black, the actual documents will still show black text on a white background. If you want to change the editing area for all new documents, first open the Normal.dotm file, which is likely located in C:Users[YOURID]AppDataRoamingMicrosoftTemplates.
Navigate to the Design tab and select black from the Page Color pulldown. The text will automatically be white. Save the file. Then navigate to File->Options->Advanced and check "Show background colors and images in Print Layout view."
Existing documents that other people send you will still be black on white, unless you head over to the Design tab and select black from the Page Color menu each time.
High-Contrast Mode for Windows
Windows 10's dark mode changes the menus on the settings menu, File Explorer (in Insider builds) and a few other places, but it doesn't affect the vast majority of traditional apps people use. When you really, really want all of your programs to have light text and dark backgrounds in their menus, you can enable Windows' high-contrast mode.
Keep in mind, though, that high-contrast mode is a blunt instrument and makes a lot of things in UI look very ugly. For example, the live tiles in the Start menu look just awful. However, if you decide you want high-contrast mode, navigate to Settings-> Ease of Access -> High-Contrast and switch it to on.
Skype has a built-in dark theme. To activate it, navigate to Settings->General->Themes. Then choose Dark. It's that simple.
Twitter Night Mode
Twitter's dark mode is called Night Mode. To activate Night Mode, click on your profile picture and select it from the menu.
Dark Mode for Web Pages in Chrome / Firefox
No matter how dark the rest of your apps appear, most web pages will still have dark text on a black background, unless you use a browser extension to solve the problem.
Download Dark Mode for Chrome or for Firefox. It puts a switch into your browser toolbar and, if you toggle it to on, all web pages change to white on black. It also offers a variety of custom dark modes or modes that are made just for popular sites such as Google, Amazon and Reddit.
Dark Themes in Your Browser
To make the tabs, address bar and toolbars in your browser turn to the dark side, you need a new theme, and there are many options. Chrome's store has a huge listing of dark themes. The Morpheon Dark theme is my favorite.
Firefox users have a built-in dark theme they can active by navigating to Customize from the settings menu and then selecting Dark from the theme pulldown on the bottom of the screen.
In Edge, navigate to Settings and select Dark from the Choose a theme menu.