Examine source code of Blue and Orange

{
  "name": "Blue and Orange",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "bluebg.png"
    },
    "colors": {
      "frame": "rgba(77, 147, 168, 1)",
      "tab_background_text": "rgba(255, 193, 5, 1)",
      "toolbar": "rgba(27, 29, 56, 1)",
      "bookmark_text": "rgba(36, 191, 188, 1)",
      "toolbar_field": "rgba(101, 103, 140, 0.56)",
      "toolbar_field_text": "rgba(255, 193, 5, 1)",
      "tab_line": "rgba(255, 193, 5, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b0e0720a-47a6-41b9-b2eb-377e8b884d16}"
    }
  }
}