AutoCAD Inventor :: Color Multiple Parts In An Assembly?

I have a large assembly model made of many different parts.  The last thing I want to do is "paint" it so I can make a drawing showing the different colors being used.  My plan is to take the entire assembly and insert it into another assembly then just change the parts to the specific colors.  I was wondering if there was a way to change the colors on multiple parts at once.  Right now I right click the part go to iproperties and then go to occurence and choose the specific color.  I know from using Solidworks that it works the opposite you click the color first and then all the parts that you want to be that color.  It works out a lot quicker.  If I select multiple parts the occurence tab in the properties is greyed out.