Unity on machine-mouse click Cube color

The title is this, 3 cube is called a B C bar,

One of the points in the mouse color, such as the point of a, which becomes blue, then point in the other after the other blue, the object in the previous point, restore the original color,

I wrote the following code: I used the goto, although realized, but feel bad, some people say with recursion to do, seek guidance

Using unityengine;using System.collections; public class myscript:monobehaviour {    Private Color tempcolor;//Object Colors     Private Gameobject tempgame;//objects in the save point     private bool tempbool=true;// Control change void Update ()      {        Ray Ray = Camera.main.ScreenPointToRay (Input.mouseposi tion);        Raycasthit hit;        if (Physics.raycast (ray, out hits) &&in Put. Getmousebuttondown (0))         {            Aa:;//goto statement jump tag   &NBSP ;         if (tempbool)             {          &NB Sp     Debug.Log (tempbool);                Tempgame = HIT.TRANSFORM.GAMEOBJ ect;//Objects                  Tempbool = false;        &NBS P  }            Else {                Debug.Log (tempbool);    &NBSP ;           TempGame.renderer.material.color = tempcolor;//Last object color         &NBS P       Tempbool = true;                Goto aa;           }            Tempcolor = hit.transform.gameObject.renderer.material.co lor;//Object Color             Hit.transform.gameObject.renderer.material.color = color.blue;/ /Point object after blue        }}}

Unity on machine-mouse click Cube color