Disable the BEAST protection by default because the GUI *will* break if you use this and have a Hifn card installed. Others may break similarly. Change it into a checkbox option, off by default, and automatically disable it if a conflicting card has been detected.
Use default RRD colors that are a little more visually distinct. Add some better comments/labels to make it easier for people to help customize and tweak the colors. Suggestions welcome.