1. Make a copy of the folder: /usr/local/cwpsrv/var/services/users/cwp_theme/design/
with another name
2. You go to theme manager and define it as default
3. Change the logos and the images you want in the /usr/local/cwpsrv/var/services/users/cwp_theme/design/img/
folder with this you will prevent the CWP updates from replacing your work
After you work, let me know how it went, pls