Examine source code of Deepnight Cobalt

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Deepnight Cobalt",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(34, 65, 75)",
      "toolbar_text": "rgb(115, 160, 173)",
      "frame": "rgb(10, 34, 41)",
      "tab_background_text": "rgb(162, 195, 204)",
      "toolbar_field": "rgb(19, 41, 49)",
      "toolbar_field_text": "rgb(115, 160, 173)",
      "tab_line": "rgb(255, 204, 0)",
      "popup": "rgb(19, 41, 49)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_selected": "rgb(229, 137, 38)",
      "tab_text": "rgb(247, 253, 251)",
      "toolbar_top_separator": "rgb(58, 94, 105)",
      "tab_loading": "rgb(255, 204, 0)"
    }
  }
}