Examine source code of ocean

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "ocean",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(5, 30, 49)",
      "toolbar_text": "rgb(0, 213, 252)",
      "frame": "rgb(6, 29, 49)",
      "tab_background_text": "rgb(6, 136, 159)",
      "toolbar_field": "rgb(27, 51, 71)",
      "toolbar_field_text": "rgb(71, 156, 172)",
      "tab_line": "rgb(38, 97, 143)",
      "popup": "rgb(3, 35, 51)",
      "popup_text": "rgb(52, 131, 149)",
      "button_background_active": "rgb(38, 97, 143)",
      "button_background_hover": "rgb(2, 79, 96)",
      "icons": "rgb(3, 129, 158)",
      "ntp_background": "rgb(0, 45, 56)",
      "popup_border": "rgb(8, 118, 145)",
      "sidebar_border": "rgb(8, 118, 145)",
      "tab_loading": "rgb(38, 97, 143)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{26433761-0470-4b14-8f09-30f015e74e30}"
    }
  }
}