Examine source code of Retro Tech

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Retro Tech 2.0",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-044-d348b7b42f4790e561202cad5e15d3e6.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(16, 45, 50)",
      "toolbar_field": "rgb(35, 251, 114)",
      "toolbar_field_text": "rgb(84, 84, 156)",
      "tab_line": "rgb(181, 254, 158)",
      "popup": "rgb(38, 117, 238)",
      "popup_text": "rgb(183, 39, 189)",
      "tab_loading": "rgb(181, 254, 158)",
      "bookmark_text": "rgb(191, 102, 129)",
      "frame": "rgb(33, 2, 5)",
      "tab_background_text": "rgb(58, 232, 248)"
    }
  }
}