Examine source code of Hydrangea Forrest

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Hydrangea Forrest",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(58, 67, 115, 0.47)",
      "toolbar_text": "rgba(204, 182, 221, 0.88)",
      "frame": "rgb(58, 67, 115)",
      "tab_background_text": "rgb(171, 162, 220)",
      "toolbar_field": "rgb(61, 71, 113)",
      "toolbar_field_text": "rgb(217, 205, 227)",
      "tab_line": "rgba(148, 137, 201, 0.77)",
      "popup": "rgb(74, 81, 118)",
      "popup_text": "rgb(217, 205, 227)",
      "button_background_active": "rgba(152, 108, 191, 0.37)",
      "button_background_hover": "rgba(138, 109, 179, 0.26)",
      "icons": "rgb(171, 162, 220)",
      "ntp_background": "rgb(61, 71, 113)",
      "popup_border": "rgba(148, 137, 201, 0.53)",
      "tab_loading": "rgba(148, 137, 201, 0.77)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5eb13da0-8996-4b49-a2c8-5eccfffd7938}"
    }
  }
}