Examine source code of Raindrops on Autumn

{
  "name": "Raindrops on Autumn",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "RaindropsonFallHCustom.jpg"
    },
    "colors": {
      "frame": "rgba(214, 133, 79, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(214, 132, 77, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(214, 132, 77, 0.09)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d6d46e01-41c4-4169-87ac-82bd2b4d34d2}"
    }
  }
}