Model color schemes

Hello all,

is there any way (or workaround) to define various color schemes for a part or assembly model? 

For example, when we are working on an assembly, we use different colors to distinguish the different components.  Also, at the same time and when we have to make some rendered representations, we have to define some other colors in order to simulate reality as close as possible.

Any ideas?  How can someone switch from one color scheme to the other?

Thanks in advance.

Vassilis Anagnostopoulos