Why would you want to?  When I receive cheap 
Kinko copy backgrounds, I just throw them away.  
They're junk, not original or anything.  I don't 
mind laser copy backgrounds

It seems to me that most people just add them to 
make more money.  I asked a few people who do 
this (for selling) & that was their response.  
They didn't care if it was matching or not.

I guess it is matching it would be nice for some 
people tho.  ^^;;