Init UI button as selected

InitButton.cs

using UnityEngine;
using UnityEngine.UI;

// makes button selected at Start (to force Highlighted color on it)
// this is required to allow pressing Fire / Submit key to press button (without having to select button first)

public class InitButton : MonoBehaviour 
{
	void Start () 
	{
        if (GetComponent<Button>())
        {
            GetComponent<Button>().Select();
            Destroy(this);
        }
    }
}