If you are tired of the default theme of Windows 10 Creators Update, I recommend Papyros, an elegant theme with Numix shades, and the Fetch iPack icons, which complement each other harmoniously.
As with every unofficial Windows theme, before you can install Papyros, if you haven’t already done so, you’ll need to apply the three patches to your system using UltraUXThemePatcher.
Next, download the zip archive containing the theme and extract its contents, and then copy the files that compose the theme to C/Windows/Resources/Themes.
Extract the Fetch iPack icon pack application from the downloaded zip archive. Change the “Super FlatMix” file extension from .ee to .exe, and then install the application.
Do not delete it after installation! It will be useful to restore, when you get bored of Papyros and Fetch iPack, to the original icons. By the way, during the installation, choose to create a restore point; it will also be useful to you if problems arise.
To activate the Papyros theme go to Settings/Personalization/Themes and activate the one you like best.
If the theme does not appear in this panel, go to C:/Windows/Resources/Themes/Papyros and double click on the desired version to apply it to the system. If the default icons will not be replaced, restart Windows Explorer and restart.