Steam skins is a custom visual appearance of the Steam client interface. The skins can create an entirely different look than the original interface and the Steam still has all the same function. The skins customization include color options, menu, fonts, borders, background, borders or any User-Interface arrangement. You can create or edit your own skins through a certain program with some coding skill but thanks to the Steam community who contribute to produce high-quality skins for the Steam user out there. If you are Steam gamers and hate to see the same looks then the Steam skin is right for you to install.
You can change your Steam overlay by installing a Steam skin that comes with the custom overlay. Otherwise, it will be an original overlay by a default setting.
If you like a certain skin but dislike the overlay, you can disable the overlay function on the Steam setting menu. Navigate to the Settings and click the In-Game tab, then uncheck the box where it says "Enable the Steam Overlay while in-game".
You can easily uninstall the Steam skin by navigating to the Steam menu and click on the Settings. Find the Interface tab and change the drop down menu where it says "Select the skin you wish Steam to use" and revert back to a default skin.
Follow this path:
Steam menu > Settings > Interface > Dropdown menu> Select the skin you wish Steam to use > choose
If you do not like a certain skin and want to completely remove it, you can delete the skin by navigating to the Steam skin folder directory. C:/Program Files/Steam/Skins Find the particular skin, then delete the folder.