Examine source code of Summer Surprises

{
  "name": "Summer Surprises",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "SpringSurprisesHCustom.jpg"
    },
    "colors": {
      "frame": "rgba(244, 231, 242, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(245, 233, 243, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(245, 233, 243, 0.1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c9cd60cc-099b-4885-a6fe-87741f3027cf}"
    }
  }
}