        <span style="padding-left: 5em">stroke: {</span> <br/>
<span ng-click="c.stroke.weight = (c.stroke.weight % 5) +1"
      style="padding-left: 10em">weight: {{c.stroke.weight}}</span> <br/>
<span ng-click="c.stroke.color = toggleColor(c.stroke.color)"
      style="padding-left: 10em">color: {{c.stroke.color}}</span> <br/>
<span ng-click="c.stroke.opacity = c.stroke.opacity*0.5"
      style="padding-left: 10em">opacity: {{c.stroke.opacity}}</span> <br/>
                                        <span st