Hello,
This post is on wrong section 😉
Go to family tab in project browser, than go to your system and edit some of your systems. You will see tab to change color of system. Than go pick color , and pick solid patern. This method will change color scheme of all elements in your system.
If you need to change color on specific element. Go select the element -> right button -> Override Graphics in view (element, category,filter) ->pick element -> Pick color and solid patern. This will allow you to change color scheme of selected elements in specific view.

Eng. Iliev L. 



⁞|⁞ BIM Implementer, Project & BIM Manager, Coordinator, MEP Engineer
⁞|⁞ http://www.TechRoom.bg