Examine source code of Palenight dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Palenight",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-027-1049af643fc55b4ffd4a8575444547c5.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(52, 50, 74)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(41, 45, 62)",
      "tab_background_text": "rgb(166, 172, 205)",
      "toolbar_field": "rgb(65, 72, 99)",
      "toolbar_field_text": "rgb(166, 172, 205)",
      "tab_line": "rgb(199, 146, 234)",
      "popup": "rgb(41, 45, 62)",
      "popup_text": "rgb(166, 172, 205)",
      "button_background_active": "rgb(65, 72, 99)",
      "sidebar_highlight_text": "rgb(103, 110, 149)",
      "sidebar_highlight": "rgb(68, 66, 103)",
      "sidebar_text": "rgb(166, 172, 205)",
      "sidebar": "rgb(52, 50, 74)",
      "tab_selected": "rgb(113, 124, 180)",
      "tab_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(199, 146, 234)"
    }
  }
}