While Windows 10 boasts a sleek design, it might not cater to all aesthetic tastes. Fortunately, Microsoft enables the incorporation of third-party themes, allowing users to personalize their systems effortlessly. This tutorial will guide you through the process of installing custom themes for Windows 10.

Essential Software Required:
Startisback: https://startisback.com/
Aero Glass Theme Signature Bypass: http://www.glass8.eu/download
Free Theme Collection: https://www.deviantart.com/popular-all-time/?section=&global=1&q=https%3A%2F%2Fwww.deviantart.com%2Fpopular-all-time%2F%3Fsection%3D%26global%3D1%26q%3DWindows+10+Theme
Example Theme Installation: https://www.deviantart.com/f3nix69/art/SteamyBlue-Windows10-Theme-633243575
Step 1: Install the downloaded Aero Glass Theme Signature Bypass and select 'Log Off' to finalize the setup.

Next, verify the Theme Signature installation at the following path. If it's not present, try resetting your computer or reinstalling.
Path: ThisPC -> Local Disk (C:) -> AeroGlass -> UxthemeSignatureBypass
(Note: The path may vary based on your software installation directory.)

Step 2: Install the 'Simplify 10 Dark Blue' theme from the following location: Simplify 10 Dark Blue\Simplify 10 Dark Blue\Themes\Creators Update 1703 Theme.
Theme paths vary by Windows version, e.g., for Windows 1607, use: Simplify 10 Dark Blue\Simplify 10 Dark Blue\Themes\Creators Update 1607 Theme

Step 3: Proceed with the installation of 'Personalize Classic Context Menu'
Open the 'Personalize Classic Context Menu' folder and execute 'Add_Personalize-classic_to_desktop_context_menu' file

Step 4: Right-click and select 'Personalize (classic) -> Themes Settings'. Choose the theme you wish to apply, such as 'Simplify 10 Dark Blue' for this guide.

Step 5: Update the File Explorer interface
- Transfer all files from the 'OldNewExplorer' folder to 'Program Files (x86)', then open 'OldNewExplorerCfg' for configuration as shown.

Step 6: Install 'StartIsBack++' from the downloaded folder.
- Navigate to the 'StartIsBackPlusPlus 2.0.9' folder and launch the 'StartIsBack' file to begin installation. Choose 'Install for everyone' option.

- Continue with the following setup options:

Minimize the Taskbar by going to 'Settings -> Personalization -> Taskbar' and selecting 'Use small taskbar buttons.'

Step 7: Install 'Blank It (Blank ExplorerFrame)' for further customization.
- Open the 'Blank ExplorerFrame' folder and install 'Blank ExplorerFrame.exe' as you would with any standard software. Remember to choose 'Patch all files' and click 'Next' to proceed with installation, which will require a system restart.

Your interface will now reflect the changes as showcased by the Themes.

With that, you've successfully installed a third-party theme. Software Tips wishes you success!