Examine source code of Spring Retreat

{
  "name": "Spring Retreat",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "SpringRetreatH.jpg"
    },
    "colors": {
      "frame": "rgba(237, 234, 203, 1)",
      "tab_background_text": "#030303",
      "toolbar": "rgba(240, 238, 206, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(240, 238, 206, 0.06)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7e6b50ba-dd74-47ae-80a2-4f6ea9cc2ec1}"
    }
  }
}