Examine source code of Mintspark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Mintspark",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-021-775b159da029a74f5c76e835cd65e9dc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(40, 79, 81)",
      "toolbar_text": "rgb(154, 211, 196)",
      "frame": "rgb(19, 39, 64)",
      "tab_background_text": "rgb(40, 77, 123)",
      "toolbar_field": "rgba(0, 0, 0, 0.2)",
      "toolbar_field_text": "rgb(219, 146, 194)",
      "tab_line": "rgb(154, 211, 196)",
      "popup": "rgb(19, 39, 64)",
      "popup_text": "rgb(154, 211, 196)",
      "ntp_background": "rgb(40, 79, 81)",
      "popup_border": "rgb(154, 211, 196)",
      "tab_background_separator": "rgb(154, 211, 196)",
      "toolbar_field_border": "rgb(154, 211, 196)",
      "tab_loading": "rgb(154, 211, 196)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cee4d5af-c583-40d3-9cb7-1e3fa33d4328}"
    }
  }
}