Examine source code of Mo ni to

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Mo ni to",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(153, 121, 103)",
      "toolbar_text": "rgb(91, 55, 23)",
      "frame": "rgb(115, 109, 102)",
      "tab_background_text": "rgb(83, 45, 7)",
      "toolbar_field": "rgb(91, 55, 23)",
      "toolbar_field_text": "rgb(83, 45, 7)",
      "tab_line": "rgb(91, 55, 23)",
      "popup": "rgb(153, 121, 103)",
      "popup_text": "rgb(83, 45, 7)",
      "tab_loading": "rgb(91, 55, 23)"
    }
  }
}