title: store UIColor in NSMutableArray
body: <p>I'm trying to store a UIColor value in an array but it keeps returning null</p>
  
  <pre><code>NSMutableArray *mijnArray_kleur = [[NSMutableArray alloc] init];
      for (int count = 0; count &lt;= 100; count++) {    
         UIColor *st = [UIColor blackColor];
         [mijnArray_kleur insertObject:st atIndex:count];
         NSLog(@"%@", [mijnArray_kleur objectAtIndex:count]);
      }
  </code></pre>
  
  <p>this logs: (null)</p>
  
  <p>any ideas how I can store a UIColor or CGColor in an arary (nested arrays gives me similar results)</p>
  
  <p>thanks! :)</p>