Is there a way to switch out the Zorin 18 Icons for the Zorin 15 Icons? I think the Zorin 15 Icons are much better and I am used to them now. Thank you for your help.
Yes, you can install the Zorin OS 15 icons from the Zorin Stable Repository .deb package:
https://launchpad.net/~zorinos/+archive/ubuntu/stable/+files/zorin-icon-themes_2.4.8_all.deb
You could download Zorin 15 from here:
and then start it in Live Mode and copy the Icons.
even more can be found here not just zorin but all kinds