title: UISLider setting thumb/minimumTrack/maximumTrack tint color gets exception
body: <p>According to developer.apple I should be able to set UISLider's property - thumbTintColor/minimumTrackTintColor/maximumTrackTintColor - reference <a href="http://developer.apple.com/library/IOs/#documentation/UIKit/Reference/UISlider_Class/Reference/Reference.html" rel="nofollow">http://developer.apple.com/library/IOs/#documentation/UIKit/Reference/UISlider_Class/Reference/Reference.html</a></p>
  
  <p>But setting any of these properties raises "unrecognized selector sent to instance" exception.</p>
  
  <p>I know there is a workaround for this by setting image properties. But I don't want to go that way. Is there anything I'm missing?</p>
  
  <p>Please any help is appreciated. Thanks in advance.</p>
  
  <p>Here is the code from UICatalog project of developer.apple examples:</p>
  
  <pre><code>- (UISlider *)sliderCtl
  {
      if (sliderCtl == nil) 
      {
          CGRect frame = CGRectMake(174.0, 12.0, 120.0, kSliderHeight);
          sliderCtl = [[UISlider alloc] initWithFrame:frame];
          [sliderCtl addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventValueChanged];
  
          // in case the parent view draws with a custom color or gradient, use a transparent color
          sliderCtl.backgroundColor = [UIColor clearColor];
  
          // I just added this following line to test
          sliderCtl.thumbTintColor = [UIColor yellowColor];
  
          sliderCtl.minimumValue = 0.0;
          sliderCtl.maximumValue = 100.0;
          sliderCtl.continuous = YES;
          sliderCtl.value = 50.0;
  
          // Add an accessibility label that describes the slider.
          [sliderCtl setAccessibilityLabel:NSLocalizedString(@"StandardSlider", @"")];
  
          sliderCtl.tag = kViewTag;   // tag this view for later so we can remove it from recycled table cells
      }
      return sliderCtl;
  }
  </code></pre>