Examine source code of Phantom Orange

{
  "name": "Phantom Orange",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "blue-gradient.png"
    },
    "colors": {
      "frame": "rgba(33, 39, 64, 1)",
      "tab_background_text": "rgba(159, 178, 196, 1)",
      "toolbar": "rgba(37, 49, 66, 1)",
      "bookmark_text": "rgba(219, 108, 40, 1)",
      "toolbar_field": "rgba(159, 178, 196, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(219, 108, 40, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b3f9ab59-810d-4b70-bdfe-0b6880b59b43}"
    }
  }
}