Creating "highlight" like effect on "info dark" button on white background
<p>If I put a "info light" button in the lower corner of my screen on dark background and check "Shows Touch On Hightlight", I get a nice highlight effect when the user touches the icon. It gives the user positive feedback.</p>

<p>In my app the background it white. So I selected "info dark" button. The "Shows Touch On Highlight" and "Highlighted Adjusts Image" are checked. But because the background is white, the highlight effect is not visible and the user does not get any feedback.</p>

<p>How can I create some kind of highlight/lowlight like effect to give some feedback to the use then the info button is touched? </p>
