Change the Editor Skin

Hey People,

I try to change the default skin for the ckeditor (v1.41)
I searched and found somethink for only ckeditor but nothing with xwiki

Default skin is Moono-Lisa, but i try to install Office 2013 (Office 2013 |

I found the editor in
in a jar file. (ubuntu1604 tomcat8 mysql)

i have tried: change only icons.png; replace skin and rename; add skin and add in config.js the skin name)

But nothing works. When I reload the editor then i loads indefinitely.
Is somewhere a solution where and how i can change the skin?

Thanks for Help