Is there a way to implement UGUI Skins ?

Hi!

I'm making a game and I need to have 2 skins for the UI. Is there a way to implement it ? If I make 2 scenes is a pain to mantain, if I make an imageChanger script the device has to load both sprites for each image ( the sprite for Skin1 and the second sprite that will be changed, or maybe just one if all the images start with null sprites)

I have ran out of ideas on how to do this efficienty!

Thanks !