Background color?

I’m printing out some outline pages from OO v4.6.1. I’ve got other questions, but the one that’s driving me nuts right now is a faint background color on the leftmost header text. Neither the header text on the right, nor either of the footer entries, have any background color. I cannot for the life of me figure out where the setting is to eliminate background color. I’ve chosen File > Print, then Headers & Footers. From there, gone to the Style Inspector window. Nothing I’ve tried has removed the faint background color behind the text. What am I missing here? TIA for any clues.