Examine source code of Autumn _Light

{
  "name": "Autumn _Light",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(13, 6, 6, 1)",
      "tab_background_text": "rgba(255, 234, 191, 1)",
      "toolbar": "rgba(13, 6, 6, 0)",
      "bookmark_text": "rgba(255, 246, 227, 1)",
      "toolbar_field": "rgba(13, 6, 6, 0.08)",
      "toolbar_field_text": "rgba(255, 234, 191, 1)",
      "tab_line": "rgba(255, 234, 191, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b13dbbc2-a54a-4204-a71e-2edade039dca}"
    }
  }
}