Examine source code of Mango Theme

{
  "name": "Mango Theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "MarsWalp2.jpg"
    },
    "colors": {
      "frame": "rgba(114, 28, 3, 1)",
      "tab_background_text": "rgba(233, 134, 39, 1)",
      "toolbar": "rgba(156, 51, 39, 1)",
      "bookmark_text": "rgba(255, 177, 8, 1)",
      "toolbar_field": "rgba(191, 90, 62, 1)",
      "toolbar_field_text": "rgba(255, 177, 8, 1)",
      "tab_line": "rgba(247, 244, 191, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9db02585-79c6-4640-9918-a1ddb0a04e6d}"
    }
  }
}