[Problem] Change 3DText color with C# script

When I try to change the color, in the console it "works" correctly.
It shows the rbg values I picked, but in the scene and game views the text color stays white.

I also noticed that if I look at the color in the inspector (with the scene running) the color is white and the rgb values are - (65025, 46410, 22440, 255).
These values are always the same every time I play the scene.

 public class DotControl : MonoBehaviour 
 {    
     string curMenu;
     
     // Use this for initialization
     void Update()
     {
             GameObject start = GameObject.FindGameObjectWithTag("Start");
             GameObject load = GameObject.FindGameObjectWithTag("Load");
             GameObject exit = GameObject.FindGameObjectWithTag("Exit");
         
             if (Input.GetAxisRaw("Vertical") > 0.9) 
             {
                 // get position
                 float posY = gameObject.transform.position.y;
 
                 // move dot
                 if (posY == 0)
                 {
                     iTween.MoveTo(gameObject, iTween.Hash("y", -4, "time", 0.1));
                     curMenu = "Exit";
                 
                     Color oldExit = exit.renderer.material.color;
                     Color newExit = new Color(255,182,88,255);
                 
                     Debug.Log(exit.renderer.material.color); //255,255,255,255
                     exit.renderer.material.SetColor("_Color", newExit);
                     Debug.Log(exit.renderer.material.color); //255,182,88,255

I tried using Red (255,0,0,255) and it worked properly.
"Named" color work apparently - red, blue, yellow, etc
The others don't.