Font.material

説明

フォントの表示に使用されるマテリアルを返す

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    private bool flag = false;
    private float rate = 1;
    private TextMesh t;
    void Update() {
        t = transform.GetComponent<TextMesh>();
        if (Time.time > rate) {
            if (flag) {
                t.font.material.color = Color.yellow;
                flag = false;
            } else {
                t.font.material.color = Color.red;
                flag = true;
            }
            rate += 1;
        }
        t.text = "This is a 3D text changing colors!";
    }
}