Examine source code of Menhera-chan

{
  "manifest_version": 2,
  "version": "1.2",
  "name": "Menhera-chan",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 255, 255, 0.46)",
      "toolbar_text": "rgb(86, 63, 43)",
      "frame": "rgb(229, 211, 191)",
      "tab_background_text": "rgb(132, 112, 87)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(86, 63, 43)",
      "tab_line": "rgb(255, 155, 43)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(86, 63, 43)",
      "icons_attention": "rgb(255, 155, 43)",
      "icons": "rgb(86, 63, 43)",
      "toolbar_bottom_separator": "rgb(132, 112, 87)",
      "toolbar_field_highlight_text": "rgb(150, 143, 137)",
      "toolbar_top_separator": "rgb(86, 63, 43)",
      "toolbar_vertical_separator": "rgb(70, 59, 52)",
      "tab_loading": "rgb(255, 155, 43)"
    }
  }
}