Examine source code of Simply Mozilla

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#070708",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Simply Mozilla",
  "manifest_version": 2,
  "description": "A really simple Mozilla Theme, whit the colors blue and orange of the logo."
}