Examine source code of Slowsilver

{
  "name": "Big Wednesday",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Red QS.png"
    },
    "colors": {
      "frame": "rgba(7, 255, 3, 1)",
      "tab_background_text": "rgba(247, 255, 0, 1)",
      "toolbar": "rgba(15, 15, 15, 0)",
      "bookmark_text": "rgba(247, 255, 0, 1)",
      "toolbar_field": "rgba(92, 70, 70, 0)",
      "toolbar_field_text": "rgba(247, 255, 0, 1)",
      "tab_line": "rgba(255, 9, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a56b3046-d9b6-40d1-ae7a-d9245c0fe3ea}"
    }
  }
}