Add margins, background color and position to Trellis headers

It would make a report look much nicer if you were to add top, bottom , left and right margins to the Trellis headers.  Right now the formatting is limited to font size.  Increasing the size will increase the font size but the title itself is squished between the two objects being trellised (i.e. a bar chart). Since there is a tiny bit of spacing under the title it almost looks like it goes with the one on top of it instead of under it. I would think this would be fairly easy to add and make the report look more professional.  Additional options as to where to place the title (above or below) background color and spacing all would improve the look of trellising.