Highlight layer with short animation

gistfile1.m

    CABasicAnimation *color = [CABasicAnimation animationWithKeyPath:@"borderColor"];
    color.fromValue = (id)[UIColor clearColor].CGColor;
    color.toValue   = (id)[UIColor redColor].CGColor;
    CABasicAnimation *width = [CABasicAnimation animationWithKeyPath:@"borderWidth"];
    width.fromValue = @0;
    width.toValue   = @1.5;
    CAAnimationGroup *both = [CAAnimationGroup animation];
    both.duration   = 0.5;
    both.animations = @[color, width];
    both.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
    both.autoreverses = YES;
    both.repeatCount = 1;
    [hitLayer addAnimation:both forKey:@"color and width"];