Examine source code of ube mocha

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "ube mocha",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-011-d53e0d0d1538ed554a90e056a2f04eca.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(88, 84, 119)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(108, 99, 151)",
      "tab_background_text": "rgb(200, 199, 208)",
      "toolbar_field": "rgba(232, 231, 236, 0.98)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(140, 129, 179)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "tab_loading": "rgb(140, 129, 179)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c7c4c3e9-7986-4297-9ce4-34d29a4c8cc4}"
    }
  }
}