Estimate and Invoice text color not dark enough.

Estimate and Invoice text color not dark enough.

I am using the standard template for Estimates and Invoices.  The template looks good overall but the text body is not dark enough when it prints.  I have not altered the template fonts or colors (it shows it as black text) but it looks more like a light gray when it is printed out.  I have not only had this issue at my office but have had customers also call and ask if I could darken the text in the body.  Is there a way to make this darker (maybe a bold option)?