Examine source code of Material Deepocean

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Material Deepocean",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-039-717a66ba4d455686088c80f391cb3264.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(15, 17, 26)",
      "toolbar_text": "rgb(140, 143, 158)",
      "frame": "rgb(23, 26, 33)",
      "tab_background_text": "rgb(130, 130, 149)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(123, 127, 204)",
      "tab_line": "rgb(99, 103, 115)",
      "popup": "rgb(15, 17, 26)",
      "popup_text": "rgb(98, 102, 183)",
      "tab_loading": "rgb(99, 103, 115)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d7061338-12dc-40ec-afe2-26bd4a05bfd1}"
    }
  }
}