Examine source code of Modern Lover

{
  "theme": {
    "images": {
      "theme_frame": "firefoxtwos.jpg"
    },
    "colors": {
      "frame": "#050400",
      "tab_background_text": "#080000"
    }
  },
  "version": "2.0",
  "name": "Modern Lover",
  "manifest_version": 2,
  "description": "Modern, clean, orange, black"
}