Examine source code of Calm Blue

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Calm Blue",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(19, 85, 139)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(15, 51, 64)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(5, 5, 5, 0.61)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(18, 90, 147)",
      "popup": "rgb(14, 65, 105)",
      "popup_text": "rgb(255, 255, 255)",
      "popup_border": "rgba(19, 156, 237, 0.39)",
      "popup_highlight": "rgba(19, 156, 237, 0.67)",
      "toolbar_field_focus": "rgba(9, 39, 63, 0.95)",
      "toolbar_top_separator": "rgb(19, 85, 139)",
      "tab_loading": "rgb(18, 90, 147)"
    }
  }
}