How to make a part print lighter

Hi users,

I'm looking for advice please on how to make a part print lighter?  The snips below show the issue, I simply want to show the roof sheeting as light grey...

  1. The .SLDPRT as imported from another designer's .STEP model, made up of many surface bodies :

2.  As appearing in my new .SLDASM:

 

 

  1. Appearance on the pdf by the other designer:

 

  1. Appearance on my .SLDDRW

 

 

  1. Appearance on my pdf :