Style used by default for the thumb that is dragged in GUI.HorizontalScrollbar controls.
// Modifies only the horizontal scrollbar thumb of the current GUISkin
var hSbarValue : float;
var style : GUIStyle;
function OnGUI () {
GUI.skin.horizontalScrollbarThumb = style;
hSbarValue = GUILayout.HorizontalScrollbar (hSbarValue, 1.0, 0.0, 10.0);
}