Examine source code of Aesthetica

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Aesthetica",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-045-3e6898966e6ccdc87f80d23d4e7a6a49.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(220, 32, 32)",
      "toolbar_text": "rgb(8, 232, 39)",
      "frame": "rgb(13, 182, 37)",
      "tab_background_text": "rgb(36, 39, 40)",
      "toolbar_field": "rgb(220, 251, 5)",
      "toolbar_field_text": "rgb(255, 10, 3)",
      "tab_line": "rgb(6, 179, 237)",
      "popup": "rgb(201, 247, 4)",
      "popup_text": "rgb(1, 14, 10)",
      "button_background_hover": "rgb(255, 255, 255)",
      "icons": "rgb(90, 255, 0)",
      "popup_border": "rgb(0, 2, 6)",
      "popup_highlight": "rgb(23, 91, 225)",
      "tab_selected": "rgb(1, 9, 13)",
      "toolbar_field_border": "rgb(0, 2, 5)",
      "toolbar_field_highlight_text": "rgb(12, 35, 58)",
      "tab_loading": "rgb(6, 179, 237)"
    }
  }
}