Change attributes cart color for printing

[Bill8g]

My uncle has a shop and I kinda "webmaster" it. He told me that when he prints an order he can not see the lines for the attributes on the print. So he asked me to change the color of the lines.

 

I supposed that I had to find the .ptl file and change it.

 

I found that it is the shopping-cart-product-line.tpl file

 

But the problem is I can't figure out what I have to change. I put 2 attachements so you can see what I found and what I would like to change. I put a ">>" mark so you can see the 7th line that is the line we need to change. Any ideas?

[Bill8g]

I am sure some advanced users know how to fix this. I need some help please.