RandomShrub for Pixel Sprite Generator Unity

using UnityEngine;
using System.Collections;
using PixelSpriteGenerator;

public class RandomShrub : MonoBehaviour {

	private PsgMask mask;
	private PsgSprite sprite;
	private SpriteRenderer sr;

	// Use this for initialization
	void Start () {

		sr = GetComponent<SpriteRenderer> ();

		mask = new PsgMask (new int[] {

			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, -1, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, -1, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, -1, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, -1, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, -1, 0, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, 2, 2, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, -1, -1, 0, 0, -1, -1, 2, 2, 2,
			0, 0, 0, 0, 0, 0, -1, 0, -1, 0, 0, -1, 0, -1, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, -1, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, -1, -1, 2, 0, 0, 0, 2, 2, 2,
			0, 0, 0, 0, 0, 0, -1, 0, 0, -1, -1, 2, 0, 2, 2, 2,
			0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, -1, -1, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 2, 2, 2,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -2, 2, 2, 2,
		}, 16, 32, true, false);

		var options = new PsgOptions () {
			Colored = true,
			EdgeBrightness = 0.3f,
			ColorVariations = 0.2f,
			BrightnessNoise = 0.3f,
			Saturation = 0.5f
		};

		sprite = new PsgSprite (mask, options);

		var tex = sprite.texture;
		tex.wrapMode = TextureWrapMode.Clamp;
		tex.filterMode = FilterMode.Point;

		sr.sprite = Sprite.Create(tex, new Rect(0, 0, 32f, 32f), new Vector2(0.5f, 0.5f), 32f);
		sr.flipY = true;

	}

}

Found a small work around by subtracting 0.02f from the width before creating the sprite. Any idea why your example ships have a much larger variance in color compared to the original project's even with the same settings? Each individual pixel color seems more random in your examples. Comparing the 'many color variations' sprites you have on this project's readme against the original project's 'many color variations' sprites it's quite noticable