In Windows 7 and 8/8.1, we could easily install new themes and switch between installed themes by opening the Personalization window.
In Windows 10, when you right-click on desktop and click Personalize option, the Personalization section of Settings app is launched instead of the classic Personalization window. Because of this, if you want to change the default theme to a newly installed one in Windows 10 or uninstall a desktop theme to free up some disk space, you need to follow a couple of extra steps.
Whether you want to switch between installed themes or uninstall a theme in Windows 10, you can use the directions mentioned in below given methods.
NOTE: Desktop themes are completely different from visual styles. This guide covers only installing and switching between desktop themes and not visual styles.
Method 1 of 3
To change the current theme
Step 1: Right-click on desktop, click Personalize option to open and navigate to Personalization section of Settings app.
Step 2: On the left-side of the Settings app, click Themes.
Step 3: Click the Theme settings link on the right-side to open the classic Personalization window.
Step 4: Here, click the installed theme that you would like to use to apply the theme. That’s it!
And if you want to change the default color, please follow our how to open Color and Appearance window in Window 10 guide. The theme color can be changed under Settings app as well.
Method 2 of 3
To install a new theme
Step 1: There are many safe places on the web from where you can download hundreds of elegant themes. One of them is Microsoft’s own personalization gallery page.Visit the official Windows personalization gallery page to download as many themes as you want. The Personalization gallery features over 300 themes. Note that themes that were released for Windows 7 and Windows 8 are compatible with Windows 10 as well.
Step 2: After downloading themes, double-click on a theme to install and apply the theme.
Alternatively, you can right-click on a theme and then click Open option to install and apply theme.
To switch between installed themes, please follow the instructions mentioned in Method 1 or Method 3.
Method 3 of 3
Another way to change the existing theme
Step 1: Open the Run command box by simultaneously pressing Windows + R keys (Windows+R).Step 2: In the box, type Control Desktop, and then press Enter to open the classic Personalization window.
Step 3: Here, click on the theme that you want to apply to apply the same. Good luck!
As you probably know, you can download hundreds of themes from the official Windows personalization gallery page by clicking Get more themes online link located in the classic Personalization window.
Source: http://www.intowindows.com/how-to-change-the-default-theme-in-windows-10/
