Examine source code of Beautiful feathers

{
  "name": "Beautiful feathers",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "Untitled-3.jpg"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(255, 255, 255, 0.6)",
      "bookmark_text": "rgba(255, 0, 224, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.7)",
      "toolbar_field_text": "rgba(255, 0, 224, 1)",
      "tab_line": "rgba(255, 0, 224, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4f75b1cc-bb40-4bed-9e2d-4bb5581b55fb}"
    }
  }
}