// original animation code, butter smooth, zero lag induced
    [UIView beginAnimations:@"hideSelectedColor" context:nil];
    [UIView setAnimationDuration:0.25];
    [UIView setAnimationCurve:UIViewAnimationCurveEaseIn];
    selectedColor.alpha = 0;
    [UIView commitAnimations];

// block version, slows down everything
    [UIView animateWithDuration: 0.25
                          delay: 0.0
                        options: UIViewAnimationOptionCurveEaseIn
                     animations:^{
                         selectedColor.alpha = 0;
                     }
                     completion:^(BOOL finished){
                         //[delegate control:self didSelectItemAtIndex:selectedColorIndex];
                     }];