3d ball Timer

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class timer : MonoBehaviour {
    public Text timertext;
    private float time;
    public bool pause = false;
    // Use this for initialization
    void Start () {
        time = Time.time;
    }

    // Update is called once per frame
    void Update () {

        if (pause)
            return;

        time += Time.deltaTime;
        string minutes = ((int)time / 60).ToString();
        string seconds = (time % 60).ToString("f1");
        timertext.text = minutes + ":" + seconds;
    }

    public void pausecolor()
    {
        pause = true;
        timertext.color = Color.yellow;
    }
}