Examine source code of Brown Leather

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Leather Brown",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(64, 56, 42)",
      "tab_background_text": "rgb(222, 222, 222)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(248, 112, 140)",
      "popup": "rgb(48, 48, 48)",
      "popup_text": "rgb(255, 255, 255)",
      "icons": "rgb(225, 238, 157)",
      "toolbar_bottom_separator": "rgba(255, 234, 0, 0.23)",
      "toolbar_field_border": "rgb(52, 141, 177)",
      "toolbar_top_separator": "rgb(247, 255, 203)",
      "tab_loading": "rgb(248, 112, 140)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7458239b-ae1e-405d-b01f-f9bc31a2d974}"
    }
  }
}