diff --git a/py/posterize.py b/py/posterize.py
index f8f7689..077bc51 100644
--- a/py/posterize.py
+++ b/py/posterize.py
@@ -5,6 +5,7 @@ import cv2
 from common import convert_color, closest_color_weighted_euclidean, closest_color_euclidean, create_colored_image, remove_from_list, list_match, to_luma, convertScale
 import os
 import subprocess
+from multiprocessing.pool import ThreadPool
 from functools import cmp_to_key
 
 def sort_pallete (a, b):
@@ -101,7 +102,28 @@ class Posterize:
 			'space' : self.pallete_space
 		})
 
-
+		for i in range(self.n_colors) :
+			if list_match(self.original_colors[i], white) :
+				continue
+			original = self.original_colors[i] #BGR
+			mask = self.extract_color_mask(self.image, original)
+			original_normalized = convert_color(original, 'BGR', self.pallete_space)
+			if self.pallete_space == 'RGB' or self.pallete_space == 'BGR' :
+				closest, dist = closest_color_weighted_euclidean(self.colors, original_normalized, self.pallete_space)
+			else :
+				closest, dist = closest_color_euclidean(self.colors, original_normalized)
+			self.colors = remove_from_list(self.colors, closest)
+			name = self.match_color_name(closest)
+			layer_name = f'{name}.png'
+			output_layer = os.path.join(self.output, layer_name)
+			cv2.imwrite(output_layer, mask)
+			self.layers.append({
+				'layer' : output_layer,
+				'color' : closest,
+				'space' : self.pallete_space
+			})
+			mask = cv2.bitwise_not(mask)
+			composite[mask > 0] = np.array(closest)
 
 		composite_name = f'posterized.png'
 		composite_path = os.path.join(self.output, composite_name)
@@ -131,6 +153,8 @@ class Posterize:
 
 	def stipple (self) :
 		sanity_check = 0
+		cmds = []
+
 		for layer in self.layers :
 			if 'WHITE.png' in layer['layer'] :
 				continue
@@ -154,14 +178,34 @@ class Posterize:
 				'--config', self.conf, 
 				'--maxParticles', str(max_particles) 
 			]
-			print(cmd)
-			subprocess.call(cmd, cwd = self.stipple_gen)
-			self.svgs.append(output_svg)
-			self.previews.append({
-				'layer' : output_image,
-				'color' : layer['color']
+			cmds.append({
+				'cmd' : cmd,
+				'color'  : layer['color'],
+				'output_image' : output_image,
+				'output_svg' : output_svg
 			})
 
+		if self.jobs > 1 :
+			print(f'Running {self.jobs} processes simultaneously for {len(cmds)} jobs')
+			pool = ThreadPool(self.jobs)
+			for job in cmds :
+				pool.apply_async(self.render, (job,))
+			pool.close()
+			pool.join()
+
+		else :
+			for job in cmds :
+				self.render(job)
+
+
+	def render (self, job) : 
+		subprocess.Popen(job['cmd'], cwd = self.stipple_gen)
+		self.svgs.append(job['output_svg'])
+		self.previews.append({
+			'layer' : job['output_image'],
+			'color' : job['color']
+		})
+
 	def preview (self) :
 		composite = create_colored_image(self.w, self.h, [255, 255, 255])
 		for layer in self.previews :