How can i change scroll bar track color from a set position?
<p>I have two horizontal scroll bars and they move together, My two documents are different widths.</p>

<p>The scroll bar that will not scroll all the way must have red highlighting on the position it wont affect the web browsers scrolling.</p>

<p>In the picture below the right hand web browser is at its full webBrowser2Document.Body.ScrollRectangle.Right but the left had browser can still scroll more.</p>

<p>So when a web browser position reaches webBrowser2Document.Body.ScrollRectangle.Right, how can i turn the remaining track red?</p>

<p>Or even better how can i set a portion of the track color to be red from a position on wards. </p>

<p><img src="http://i.stack.imgur.com/f4IiW.png" alt="enter image description here"></p>
