Examine source code of Essense of Fall

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Essense of Fall",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(227, 196, 147, 0.13)",
      "toolbar_text": "rgb(255, 209, 137)",
      "frame": "rgb(114, 70, 34)",
      "tab_background_text": "rgb(218, 186, 142)",
      "toolbar_field": "rgba(114, 70, 34, 0.47)",
      "toolbar_field_text": "rgb(255, 238, 212)",
      "tab_line": "rgb(255, 175, 0)",
      "popup": "rgb(114, 70, 34)",
      "popup_text": "rgb(227, 196, 147)",
      "button_background_active": "rgb(214, 148, 47)",
      "button_background_hover": "rgb(94, 61, 10)",
      "frame_inactive": "rgb(214, 148, 47)",
      "icons_attention": "rgb(214, 148, 47)",
      "ntp_background": "rgb(114, 70, 34)",
      "ntp_text": "rgb(255, 209, 137)",
      "popup_border": "rgb(255, 209, 137)",
      "popup_highlight_text": "rgb(255, 209, 137)",
      "popup_highlight": "rgb(114, 70, 34)",
      "sidebar_border": "rgb(215, 154, 70)",
      "sidebar_highlight_text": "rgb(0, 0, 0)",
      "sidebar_highlight": "rgb(176, 146, 104)",
      "sidebar_text": "rgb(255, 209, 137)",
      "sidebar": "rgb(114, 70, 34)",
      "tab_background_separator": "rgb(233, 157, 40)",
      "tab_selected": "rgba(233, 185, 106, 0.24)",
      "tab_text": "rgb(249, 222, 178)",
      "toolbar_bottom_separator": "rgb(240, 164, 47)",
      "toolbar_field_border_focus": "rgba(255, 216, 161, 0.79)",
      "toolbar_field_border": "rgba(255, 223, 177, 0.17)",
      "toolbar_top_separator": "rgba(255, 238, 212, 0)",
      "tab_loading": "rgb(255, 175, 0)"
    }
  }
}