Let json schema compiler handle using arrays as types

chrome/common/extensions/api/browserAction.json

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 [
   {
     "namespace": "browserAction",
     "dependencies": [ "tabs" ],
     "types": [
       {
@@ skipping 193 matching lines @@
       {
         "name": "setBadgeBackgroundColor",
         "type": "function",
         "description": "Sets the background color for the badge.",
         "parameters": [
           {
             "name": "details",
             "type": "object",
             "properties": {
               "color": {
-                "type": "string",
                 "description": "An array of four integers in the range [0,255] that make up the RGBA color of the badge. For example, opaque red is <code>[255, 0, 0, 255]</code>. Can also be a string with a CSS value, with opaque red being <code>#FF0000</code> or <code>#F00</code>.",
                 "choices": [
                   {"type": "string"},
                   {"$ref": "ColorArray"}
                 ]
               },
               "tabId": {
                 "type": "integer",
                 "optional": true,
                 "description": "Limits the change to when a particular tab is selected. Automatically resets when the tab is closed."
@@ skipping 39 matching lines @@
         "parameters": [
           {
             "name": "tab",
             "$ref": "Tab"
           }
         ]
       }
     ]
   }
 ]