Search bar in runtime? Linking the result of search to gameobject and changing the color of gameobject ?

Hello everyone, I'm newbie to Unity. I'm trying to create a search bar in game view Unity. Following this topic,

http://answers.unity3d.com/questions/643598/xeong-question-pt-2-search-bar-issue.html

I've created a search box in the game view but i want to make a button of each result. . When I click on the button, the selected object will change the color to red.

This is the image of searching bar ( it's not beautiful but at least it works :() When I type "Bureau", it will show the game objects which contain the "Bureau" in their name. So, I use GUI.Button with transform of game object to create the buttons in the image. Here's the script:

 using UnityEngine;
 using System.Collections;
 using UnityEditor;
 using UnityEngine.UI;
 
 
 public class SearchBox : MonoBehaviour {
     string searchString = "Recherche";
     public GameObject[] items;
     GameObject firstGameObject;
     Transform GOtransform;
     int buttonPosX, buttonPosY;
 
     void OnGUI()
     {
         GUILayout.BeginHorizontal(EditorStyles.toolbar);
         GUILayout.FlexibleSpace();
         searchString = GUILayout.TextField(searchString, EditorStyles.toolbarTextField);
         GUILayout.EndHorizontal();
         firstGameObject = items [0];
         
         // Do comparison here. For example
         if (!string.IsNullOrEmpty (searchString)) {
 
             //Debug.Log (firstGameObject.name);
             buttonPosX=10;
             buttonPosY=70;
 
             for(int i=0; i<firstGameObject.transform.childCount; i++){
                 GOtransform=firstGameObject.transform.GetChild(i);
 
                 if (GOtransform.name.ToUpper().Contains(searchString.ToUpper()))
                 {
                     if(GUI.Button(new Rect(buttonPosX, buttonPosY, GOtransform.name.Length*6+2, 30), GOtransform.name))
 
                         gameObject.transform.Find(string Gotransform.name).gameObject.GetComponent<Renderer>().material.color=Color.red;
 
                                            buttonPosX+=0;
                            buttonPosY+=32;
 
                         }             
                 
             }
         }
 
     }
 }
 

I try to get gameobject from GOtransform in order to get component.material.color but it shows the error below:

Assets/Scripts/SearchBox.cs(47,92): error CS1525: Unexpected symbol Gotransform', expecting .'

So, the problem is on this line:

gameObject.transform.Find(string Gotransform.name).gameObject.GetComponent().material.color=Color.red;

Anyone can help me? Or another methode to create a searching bar and then click on the result to change color of gameobject? I've tried with the new UI button but I was totally lost with Onclick and Add listener.

Thanks in advance.