Examine source code of Firefox by Nameda

{
  "theme": {
    "images": {
      "theme_frame": "FF.jpg"
    },
    "colors": {
      "frame": "#09cbd9",
      "tab_background_text": "#ecf573"
    }
  },
  "version": "2.0",
  "name": "Firefox by Nameda",
  "manifest_version": 2,
  "description": "my go on  a firefox persona just for the fun of trying out"
}