I'm having a horrible problem with fancyhdr and tikz that I was hoping you'd be able to solve for me.
I've tried desperately to get a simple, colored rectangle to show up as background for my headers, much like in the attached picture.
However, for the life of me, no matter what I try, I can't seem to get something like this done. I've been able to draw rectangles, sure, but none of them have the following characteristics:
- Same width as the page's;
- Same height as the header text.
Can you please help me? I have no idea how to do this, and I have very little knowledge of how tikz and fancyhdr work.