Change color of individual tile in tilemap

I'm trying to change the color of an individual tile when I put my mouse on it, but I can't get the color to change.

I can only seem to change the color of all tiles within the map by using tilemap.color = Color.x

Here's what I have

     public Tilemap tiles;
     Tilemap tMap;
 
 
     private void Awake()
     {
         tMap = GetComponent<Tilemap>();
         control = FindObjectOfType<GameController>();
     }
 
     private void OnMouseOver()
     {
         Vector3 mousePos = Input.mousePosition;
         Vector3Int cellPosition = tiles.WorldToCell(Camera.main.ScreenToWorldPoint(mousePos));
         Tile tile = tMap.GetTile<Tile>(cellPosition);
 
         if (control.money >= control.currentTowerCost)
         {
             tile.color = Color.green;
             //tMap.color = Color.green;
         }
         else
         {
             tile.color = Color.red;
             //tMap.color = Color.red;
         }
 
     }