Examine source code of fox light

{
  "theme": {
    "images": {
      "theme_frame": "foxlighthd.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#4a2d13"
    }
  },
  "version": "2.0",
  "name": "fox light",
  "manifest_version": 2,
  "description": "the second persona! called \"foxlight\",  dedicate to firefox:\n3 colors, but great colors. somehow like  brush colors!\nthe blank area in the footer is for links !! \nhope you like it"
}