Custom photoworks materials in custom solidwork materials

When you create a custom solidworks material it's possible toassign a photoworks material to it. But it seems that you can notassign a photoworks material you created yourself. I want to make acustom steel material with orange color. When i render largeassemblies I don't want to assign photoworks materials to all theparts. It would be so sweet if a custom photoworks material couldbe attached to my custom solidworks material.

Does anyone understand what I mean? I would be amazed if thiswasn't possible.

Thanks in advance!