Just unzip in the folder:
c:/bb2018(or 2019/CustomSkins

If anyone have tried on bb2019 let me know.

Edit:
Then Right click in the chord-sheet area
click on skin=>(you'll see them if you have unzipped them in the correct folder.) and click on it for to use them.

Let me now if it's not clear because english is not my primary language...

Last edited by Willy6996; 06/19/19 02:51 PM.