Examine source code of Late night

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Late night",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-018-0ca3dfc7bb661ec53999d358812ce0ab.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(45, 51, 54, 0.5)",
      "toolbar_text": "rgb(168, 216, 234)",
      "frame": "rgb(36, 38, 41)",
      "tab_background_text": "rgb(168, 216, 234)",
      "toolbar_field": "rgb(168, 216, 234)",
      "toolbar_field_text": "rgb(38, 50, 54)",
      "tab_line": "rgb(168, 216, 234)",
      "popup": "rgb(32, 35, 37)",
      "popup_text": "rgb(168, 216, 234)",
      "tab_loading": "rgb(168, 216, 234)"
    }
  }
}