Big trouble trying to print LibreOffice.odt document in color using HP deskjet printer

I have been using LibreOffice with my new MacBook Pro, OS 10.6.8, for almost eleven months. At first documents printed only in color, but I somehow managed to make black and white the default, which is what I want. From time to time I have printed documents in color as well. Today I need to print a document that has both color and black text but have been unable to figure out how to do so. I was on the phone with HP technical support for over thirty minutes a little while ago and they could not help me in the end. The tech said I needed to contact the software developer for support. My printer is an HP Deskjet 3520. Can you help me?

Thank you,

Mark Carlson
Athens, TX