Examine source code of Porpel

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Porpel",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-045-3e6898966e6ccdc87f80d23d4e7a6a49.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(28, 4, 31)",
      "toolbar_text": "rgb(215, 109, 193)",
      "frame": "rgb(55, 10, 57)",
      "tab_background_text": "rgb(215, 109, 193)",
      "toolbar_field": "rgb(35, 8, 47)",
      "toolbar_field_text": "rgb(215, 109, 193)",
      "tab_line": "rgb(131, 62, 117)",
      "popup": "rgb(104, 63, 111)",
      "popup_text": "rgb(240, 238, 121)",
      "button_background_active": "rgb(255, 252, 75)",
      "icons": "rgb(90, 193, 194)",
      "ntp_background": "rgb(55, 10, 57)",
      "tab_selected": "rgb(255, 252, 75)",
      "tab_loading": "rgb(131, 62, 117)"
    }
  }
}