Examine source code of dark and light sea

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "dark sea",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-011-d53e0d0d1538ed554a90e056a2f04eca.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(22, 42, 53)",
      "toolbar_text": "rgb(211, 221, 248)",
      "frame": "rgb(27, 55, 70)",
      "tab_background_text": "rgb(211, 221, 248)",
      "toolbar_field": "rgb(67, 100, 116)",
      "toolbar_field_text": "rgb(212, 227, 255)",
      "tab_line": "rgb(122, 164, 185)",
      "popup": "rgb(231, 242, 251)",
      "popup_text": "rgb(14, 38, 51)",
      "tab_loading": "rgb(122, 164, 185)"
    }
  }
}