Examine source code of Rainbow Autumn Evening

{
  "name": "Rainbow Autumn Evening",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(181, 135, 92, 1)",
      "tab_background_text": "rgba(253, 255, 156, 1)",
      "toolbar": "rgba(181, 137, 92, 0)",
      "bookmark_text": "rgba(250, 252, 143, 1)",
      "toolbar_field": "rgba(181, 137, 92, 0.07)",
      "toolbar_field_text": "rgba(253, 255, 156, 1)",
      "tab_line": "rgba(253, 255, 156, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1ecf001b-16c9-4b94-a2da-1c693c649de3}"
    }
  }
}