void OnGUI()
 {
     GUI.backgroundColor = new Color(1, 0.8f, 0.8f, 1);
     GUILayout.BeginVertical("", "box");
     GUILayout.Label("Float");
     val.DrawFloatGUI();
     GUILayout.EndVertical();
     GUI.backgroundColor = new Color(0.8f, 1f, 0.8f, 1);
     GUILayout.BeginVertical("", "box");
     GUILayout.Label("Double");
     val.DrawDoubleGUI();
     GUILayout.EndVertical();
     GUI.backgroundColor = new Color(0.8f, 0.8f, 1f, 1);
     GUILayout.BeginVertical("", "box");
     GUILayout.Label("Integer");
     val.DrawLongGUI();
     GUILayout.EndVertical();
 }