diff --git a/README.md b/README.md
index 204f015..6ada0d8 100644
--- a/README.md
+++ b/README.md
@@ -15,4 +15,6 @@ This program aims to compute the approximate location of a mobile terminal for a
 ## Annex : N-Lateration 3D visualisation
 visuals.py provides a cool function to graphically represent the N-Lateration distances in a 3D space by creating an animated gif (RMI style)
 ### Example
-[Click here to view output gif example](https://dantz.fr/LO53/out.gif?) (too big to be displayed)
+[Click here to view output gif example](https://dantz.fr/LO53/out_rgb.gif?) (too big to be displayed)
+
+[Or here for the shades of grey version](https://dantz.fr/LO53/out.gif?) (too big to be displayed)
diff --git a/structure.py b/structure.py
index 75a97b5..b6e7e64 100644
--- a/structure.py
+++ b/structure.py
@@ -297,5 +297,6 @@ def NLateration(data, step=.1, xSize=0.0, ySize=0.0, zSize=0.0):
                 if d < minDist:
                     minDist = d
                     minLoc = Location(round(k,2),round(l,2),round(m,2))
-                imageArray[floor(l*10)].append(d*10+255-min(10+exp(d*2),255))
+                d = (max(1-d/10.0, 0))**2
+                imageArray[floor(l*10)].append((250-floor(360-d*360), 255, floor(50+d*200)))
     return (minLoc, minDist, imageArray[0], floor(ySize/step), floor(xSize/step), imageArray)
diff --git a/visuals.py b/visuals.py
index e8f7b85..70e3d62 100644
--- a/visuals.py
+++ b/visuals.py
@@ -6,9 +6,10 @@ dataset = [(Location(.5,.5,.5), 3.0), (Location(4.0,.0,.0), 2.0), (Location(4.0,
 NLat_result = NLateration(dataset)
 W,H = NLat_result[3], NLat_result[4]
 frames = []
+dummy = [0 for _ in range(len(NLat_result[5][0]))]
 
 def createFrame(x,y,nbr):
-    img = Image.new("L",(x,y))
+    img = Image.new("HSV",(x,y))
     img.putdata(NLat_result[5][nbr])
     return img
 
@@ -22,4 +23,3 @@ def exportGif():
 
     frames[0].save("out.gif", format="GIF", append_images=frames[1:], save_all=True, duration=100, loop=0)
     print("gif exported")
-
--
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