Examine source code of LightFF

{
  "theme": {
    "images": {
      "theme_frame": "persona_dean_ward.png"
    },
    "colors": {
      "frame": "#4f4f4f",
      "tab_background_text": "#303030"
    }
  },
  "version": "2.0",
  "name": "LightFF",
  "manifest_version": 2,
  "description": "A light and simple firefox themed persona. Non obtrusive and clean."
}