title: How to draw items in listbox in a different color
body: <p>My question is basically the same as this <a href="https://stackoverflow.com/questions/8563508/how-do-i-draw-the-selected-list-box-item-in-a-different-color">question</a>. However, I want make the color flow from left to right from a set color to white. The idea is that I want to "fill" every item to 100% and that gradually changes the color from green to yellow to red.</p>