Examine source code of Brown orange

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Brown orange",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-017-7074520d97b5c592d413aed5f115f093.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(179, 130, 82, 0.42)",
      "toolbar_text": "rgb(255, 236, 221)",
      "frame": "rgb(90, 42, 7)",
      "tab_background_text": "rgb(246, 191, 148)",
      "toolbar_field": "rgba(95, 56, 6, 0.44)",
      "toolbar_field_text": "rgb(187, 184, 181)",
      "tab_line": "rgba(205, 196, 255, 0.54)",
      "popup": "rgb(192, 124, 72)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_hover": "rgba(208, 190, 145, 0.32)",
      "icons": "rgb(244, 171, 140)",
      "ntp_background": "rgb(137, 111, 66)",
      "ntp_text": "rgb(90, 35, 14)",
      "sidebar_border": "rgba(87, 117, 35, 0.29)",
      "sidebar": "rgb(152, 65, 0)",
      "tab_background_separator": "rgb(163, 105, 17)",
      "tab_loading": "rgba(139, 104, 50, 0.54)",
      "tab_selected": "rgba(255, 141, 0, 0.25)",
      "toolbar_bottom_separator": "rgba(64, 64, 23, 0.2)",
      "toolbar_top_separator": "rgba(61, 61, 21, 0.2)",
      "toolbar_vertical_separator": "rgba(222, 222, 22, 0.7)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{06a8d602-c0cd-43f6-883d-4de23be30a8f}"
    }
  }
}