When a drawing is being printing, inventor can't change part's background temporarily.
So I always change the background in the application option > color tab.
If Inventor have the transparency option for print, it can be saved time.
like an excel function 'select transparent color'(attached image).
![excel function.png excel function.png](https://forums.autodesk.com/t5/image/serverpage/image-id/954609i9BC50990E323F3BE/image-size/large?v=v2&px=999)