Examine source code of Pastel Sakura

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Pastel Sakura",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(225, 234, 239, 0)",
      "toolbar_text": "rgb(106, 15, 75)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(111, 19, 81)",
      "toolbar_field": "rgb(255, 249, 253)",
      "toolbar_field_text": "rgb(89, 33, 129)",
      "tab_line": "rgb(231, 40, 166)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(111, 19, 81)",
      "toolbar_top_separator": "rgba(111, 19, 81, 0.1)",
      "tab_loading": "rgb(231, 40, 166)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6503fdc8-cef6-4ca7-91c8-e5e3dcac7ace}"
    }
  }
}