using UnityEngine;

[ExecuteInEditMode]

public class Example : MonoBehaviour {

public string Text;

private GUIStyle style;

private Color color = new Color(0, 0, 0, .9f);

private void OnGUI()

{

if (style == null)

{

style = new GUIStyle(GUI.skin.label);

style.normal.background = new Texture2D(1, 1);

style.normal.background.SetPixel(0, 0, Color.black);

style.padding = new RectOffset(5, 5, 5, 5);

}

var c = GUI.backgroundColor;

GUI.backgroundColor = color;

var rect = GUI.skin.label.CalcSize(new GUIContent(Text));

GUILayout.BeginArea(new Rect(50, Screen.height - rect.y - 50, rect.x + 20, rect.y + 20));

GUILayout.Label(Text, style);

GUILayout.EndArea();

GUI.backgroundColor = c;

}

}