Examine source code of The Calm Sky

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Calm Sky",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-034-e0dfa84411058d2e5627f19f1ea501ca.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(68, 68, 70)",
      "toolbar_text": "rgb(195, 223, 241)",
      "frame": "rgb(13, 13, 13)",
      "tab_background_text": "rgb(0, 158, 242)",
      "toolbar_field": "rgb(3, 3, 3)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(0, 158, 242)",
      "popup": "rgb(55, 55, 55)",
      "popup_text": "rgb(195, 223, 241)",
      "tab_loading": "rgb(0, 158, 242)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b963b126-dae2-42f0-b12b-9a76fa743c56}"
    }
  }
}