I find the default fonts to be rather difficult to read.

The following patch changes the default fonts to TTF so that labels will be legible.

At the moment, this patch will probably only work under Linux because it uses a hardcoded path and specific font. (/usr/share/fonts/bitstream-vera/) (Vera.ttf)
Which is where Redhat stores the Vera.ttf font.
However, this patch does prove the concept.

What I am requesting is that this patch be incorporated into graphstat such that the drupal administrator can define whether or not to use a TTF font, their sizes, and where to find the fonts. This would help make such a patch more OS (and distribution) independent.