diff --git a/code/Noise.readme b/code/Noise.readme
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--- /dev/null
+++ b/code/Noise.readme
@@ -0,0 +1,15 @@
+Classes:
+
+/******************/
+/** COLORIZATION **/
+/******************/
+Principe: colorer en modifiant les pixels (n&b) dans un ton (teinte) précisée
+
+restitue la contraste mais recentre la couleur autour de la teinte
+/************ ALGO **************/
+i = 50				// incertitude
+t = RGBPixel(1,2,3)	// teinte souhaitée
+p = RGBPixel(1,2,3)	// couleur actuelle
+
+/************ CODE **************/
+def colorize(pixel, tint):
diff --git a/code/bmp.py b/code/bmp.py
index d7fe2e2..b61be32 100644
--- a/code/bmp.py
+++ b/code/bmp.py
@@ -29,13 +29,16 @@ def testFileIntegrity():
 	# Parsing
 	img.parse( binFile );
 
+	inct = 50; # incertitude
+
 	# MODIFICATIONS des pixels
 	for line in img.content.map:
 		for pixel in line:
 			pixel.setRGB(
-				( 255 - pixel.r ) % 256,
-				( 255 - pixel.g ) % 256,
-				( 255 - pixel.b ) % 256
+				(230-25) + (2*25*pixel.r/256), # 230 ± 25
+				(170-inct) + (2*inct*pixel.g/256), # 170 ± 50
+				(100-inct) + (2*inct*pixel.b/256), # 100 ± 50
+				bpp=24
 			)
 
 
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