Examine source code of Elegance for Evening

{
  "name": "Elegance for Evening",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "eleganceforeveingHCustom.jpg"
    },
    "colors": {
      "frame": "rgba(217, 192, 170, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(217, 192, 169, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(217, 192, 169, 0.04)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d6bd9669-2bb9-4d0a-bffd-fd514202d210}"
    }
  }
}