Updated charted DEP to 0.4.X

packages/charted/lib/core/utils/color.dart

 //
 // Copyright 2014 Google Inc. All rights reserved.
 //
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file or at
 // https://developers.google.com/open-source/licenses/bsd
 //
 
 part of charted.core.utils;
 
@@ skipping 258 matching lines @@
   /// Create an instance using the passed HEX string.
   /// Assumes that the string starts with a '#' before HEX chars.
   static Color _fromHexString(String hex) {
     if (isNullOrEmpty(hex) || (hex.length != 4 && hex.length != 7)) {
       return new Color.fromRgba(0, 0, 0, 0.0);
     }
     int rgb = 0;
 
     hex = hex.substring(1);
     if (hex.length == 3) {
-      for (final char in hex) {
-        final val = int.parse(char, radix: 16);
+      for (int i = 0; i < hex.length; i++) {
+        final val = int.parse(hex[i], radix: 16);
         rgb = (rgb * 16 + val) * 16 + val;
       }
     } else if (hex.length == 6) {
       rgb = int.parse(hex, radix: 16);
     }
 
     return new Color.fromRgba(
         (rgb & 0xff0000) >> 0x10, (rgb & 0xff00) >> 8, (rgb & 0xff), 1.0);
   }
 
   /// Create an instance using the passed HSL color string.
   static Color _fromHslString(String value) {
     int pos = (value.startsWith('hsl(') || value.startsWith('HSL('))
         ? 4
         : (value.startsWith('hsla(') || value.startsWith('HSLA(')) ? 5 : 0;
     if (pos != 0) {
       final params = value.substring(pos, value.length - 1).split(',');
       int h = int.parse(params[0]),
           s = int.parse(params[1]),
           l = int.parse(params[2]);
       double a = params.length == 3 ? 1.0 : double.parse(params[3]);
       return new Color.fromHsla(h, s, l, a);
     }
     return new Color.fromHsla(0, 0, 0, 0.0);
   }
 }