Option to "Copy" Official Skins into New Skin

Suggestion Title: Option to "Copy" Official Skins into New Skin Suggestion Summary: The option to automatically copy any colors from the skins listed under "Official Skins" when making a new skin. Positive points: Adding any custom CSS for QoL reasons requires you to make a brand new skin. Currently new skins start off with the default skin colors. This means, if a user has so far been using a different official skin and would like to continue to do so, but still use the custom CSS, they'd have to get the colors from the official skin and change them all manually on their new skin. If you could automatically load the colors of an existing official skin in already, it would make this process significantly easier.