Examine source code of autumn stuff

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "autumn stuff",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(255, 183, 108)",
      "toolbar_text": "rgb(132, 72, 25)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(249, 243, 191)",
      "toolbar_field": "rgb(249, 243, 191)",
      "toolbar_field_text": "rgb(158, 139, 72)",
      "tab_line": "rgb(238, 225, 194)",
      "popup": "rgb(248, 204, 183)",
      "popup_text": "rgb(192, 90, 11)",
      "button_background_active": "rgb(158, 95, 66)",
      "button_background_hover": "rgb(232, 110, 52)",
      "frame_inactive": "rgb(169, 82, 40)",
      "sidebar_border": "rgb(248, 101, 30)",
      "sidebar_highlight_text": "rgb(226, 94, 31)",
      "sidebar_text": "rgb(189, 99, 56)",
      "tab_loading": "rgb(238, 225, 194)"
    }
  }
}