Examine source code of Roshidere - Alya, Yuki, Masha

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Roshidere - Alya, Yuki, Masha",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(27, 40, 45, 0)",
      "toolbar_text": "rgb(52, 74, 84)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgb(0, 43, 62)",
      "tab_line": "rgb(35, 205, 179)",
      "popup": "rgba(7, 16, 19, 0.98)",
      "popup_text": "rgb(216, 242, 255)",
      "icons_attention": "rgb(255, 108, 0)",
      "icons": "rgb(12, 25, 31)",
      "ntp_background": "rgb(12, 25, 31)",
      "popup_border": "rgb(35, 205, 179)",
      "popup_highlight": "rgba(28, 89, 103, 0.97)",
      "sidebar_border": "rgba(35, 205, 179, 0.68)",
      "sidebar_highlight": "rgba(49, 97, 119, 0.87)",
      "sidebar_text": "rgb(216, 245, 255)",
      "sidebar": "rgb(7, 16, 19)",
      "tab_background_separator": "rgba(27, 40, 45, 0)",
      "tab_loading": "rgb(33, 66, 80)",
      "tab_selected": "rgba(23, 45, 56, 0.87)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgba(33, 66, 80, 0.1)",
      "toolbar_field_border_focus": "rgb(35, 205, 179)",
      "toolbar_field_border": "rgba(27, 40, 45, 0)",
      "toolbar_field_focus": "rgba(2, 13, 18, 0.93)",
      "toolbar_field_highlight": "rgba(49, 97, 119, 0.87)",
      "toolbar_field_separator": "rgba(27, 40, 45, 0)",
      "toolbar_field_text_focus": "rgb(216, 245, 255)",
      "toolbar_top_separator": "rgba(27, 40, 45, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{85fd6e75-5d3b-481f-8646-73a8109a9817}"
    }
  }
}