Examine source code of Autumn Silk

{
  "name": "Autumn Silk",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "AutumnSilksH.jpg"
    },
    "colors": {
      "frame": "rgba(255, 247, 229, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(255, 255, 255, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(252, 232, 166, 0.09)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ecb75287-32cc-4910-8844-4257aa474ed1}"
    }
  }
}