Color32.operator Color  

// Convert a Color32 to a Color
var color : Color = Color32(128, 255, 128, 255);

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    public Color color = new Color32(128, 255, 128, 255);
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    public color as Color = Color32(128, 255, 128, 255)