So the line you get is a darker shade of the color of the paper on which you draw it. I've used mine so much it's worn out - I trace templates for subtle accents.
On my double page spread for dinner at Shula's, I wrote Shula's over and over on the diagonal across both sheets to make my own custom background paper in the same color as the tablecloths. (It took forever! but it's a nice touch)
I use the versamark stamp pad with the African stamps I got at Animal Kingdom to make subtle accents on the pages for AK and AKL. Now, I want some stamps of various animal tracks for Wilderness lodge.