Examine source code of Minimalism Stoof

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Calm",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(105, 128, 142, 0)",
      "toolbar_text": "rgb(0, 255, 243)",
      "frame": "rgb(14, 40, 93)",
      "tab_background_text": "rgb(136, 149, 148)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(255, 255, 255, 0)",
      "popup": "rgba(255, 255, 255, 0)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_hover": "rgba(24, 101, 22, 0)",
      "ntp_text": "rgb(74, 65, 127)",
      "sidebar_border": "rgba(90, 191, 180, 0)",
      "sidebar_highlight": "rgba(40, 26, 105, 0)",
      "sidebar_text": "rgb(211, 23, 125)",
      "tab_background_separator": "rgb(98, 56, 47)",
      "tab_loading": "rgb(198, 67, 37)",
      "tab_selected": "rgba(237, 106, 173, 0)",
      "tab_text": "rgb(0, 255, 243)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fbc33d83-57cf-49aa-9e5a-ef2f4d9f5585}"
    }
  }
}