Examine source code of Flags

{
  "name": "Flags",
  "manifest_version": 2,
  "version": "1.1",
  "theme": {
    "images": {
      "theme_frame": "India_Flag.png"
    },
    "colors": {
      "frame": "rgba(255, 103, 31, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(4, 106, 56, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(255, 255, 255, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(4, 106, 56, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8b92e5a6-f150-4ef4-bf88-601780ee219b}"
    }
  }
}