Style used by default for the background part of GUI.VerticalSlider controls.
The padding property is used to determine the size of the area the thumb can be dragged within.
// Modifies only the vertical slider style of the current GUISkin
var vSliderValue : float = 0.0;
var style : GUIStyle;
function OnGUI () {
GUI.skin.verticalSlider = style;
vSliderValue = GUILayout.VerticalSlider (vSliderValue, 10.0, 0.0);
}