Examine source code of Sakura Spring Song

{
  "name": "Sakura Spring Song",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "SakuraSpringSongH3.jpg"
    },
    "colors": {
      "frame": "rgba(162, 232, 227, 1)",
      "tab_background_text": "rgba(5, 5, 5, 1)",
      "toolbar": "rgba(164, 235, 231, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(164, 235, 231, 0.1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{90f7fb2b-d7d5-4c36-9cda-8b81533f5fb3}"
    }
  }
}