diff --git a/06_Mandelbulb/Mandelbulb.lhs b/06_Mandelbulb/Mandelbulb.lhs
index 6428447..556f0e0 100644
--- a/06_Mandelbulb/Mandelbulb.lhs
+++ b/06_Mandelbulb/Mandelbulb.lhs
@@ -31,7 +31,8 @@ function, we will provide the list of atoms directly.
 > -- Centralize all user input interaction
 > inputActionMap :: InputMap World
 > inputActionMap = inputMapFromList [
->      (Press 'k' , rotate xdir 5)
+>      (Press ' ' , switch_rotation)
+>     ,(Press 'k' , rotate xdir 5)
 >     ,(Press 'i' , rotate xdir (-5))
 >     ,(Press 'j' , rotate ydir 5)
 >     ,(Press 'l' , rotate ydir (-5))
@@ -45,14 +46,15 @@ function, we will provide the list of atoms directly.
 >     ,(Press 'r' , translate zdir (-0.1))
 >     ,(Press '+' , zoom 1.1)
 >     ,(Press '-' , zoom (1/1.1))
->     ,(Press 'h' , resize 1.2)
->     ,(Press 'g' , resize (1/1.2))
+>     ,(Press 'h' , resize 2.0)
+>     ,(Press 'g' , resize (1/2.0))
 >     ]
 
 </div>
 
 > data World = World {
 >       angle       :: Point3D
+>     , anglePerSec :: Scalar
 >     , scale       :: Scalar
 >     , position    :: Point3D
 >     , box         :: Box3D
@@ -84,6 +86,11 @@ function, we will provide the list of atoms directly.
 > rotate dir angleValue world = 
 >   world {
 >      angle = (angle world) + (angleValue -*< dir) }
+>
+> switch_rotation :: World -> World
+> switch_rotation world = 
+>   world {
+>      anglePerSec = if anglePerSec world > 0 then 0 else 5.0 }
 > 
 > translate :: Point3D -> Scalar -> World -> World
 > translate dir len world = 
@@ -108,11 +115,12 @@ Our initial world state is slightly changed:
 > initialWorld :: World
 > initialWorld = World {
 >    angle = makePoint3D (30,30,0)
+>  , anglePerSec = 5.0
 >  , position = makePoint3D (0,0,0)
 >  , scale = 1.0
 >  , box = Box3D { minPoint = makePoint3D (-2,-2,-2)
 >                , maxPoint =  makePoint3D (2,2,2)
->                , resolution =  0.02 }
+>                , resolution =  0.01 }
 >  , told = 0
 >  -- We declare cache directly this time
 >  , cache = objectFunctionFromWorld initialWorld
@@ -128,7 +136,7 @@ This way instead of providing `XYFunc`, we provide directly a list of Atoms.
 >         atomList = atomListPositive ++ 
 >           map negativeTriangle atomListPositive
 >         negativeTriangle (ColoredTriangle (p1,p2,p3,c)) = 
->               ColoredTriangle (negz p1,negz p2,negz p3,c)
+>               ColoredTriangle (negz p1,negz p3,negz p2,c)
 >               where negz (P (x,y,z)) = P (x,y,-z)
 
 We know that resize is the only world change that necessitate to 
@@ -153,10 +161,18 @@ All the rest is exactly the same.
 >       , told = tnew
 >       }
 >   where 
->       anglePerSec = 5.0
->       delta = anglePerSec * elapsed / 1000.0
+>       delta = anglePerSec world * elapsed / 1000.0
 >       elapsed = fromIntegral (tnew - (told world))
 > 
+> shapeFunc' :: Scalar -> Function3D
+> shapeFunc' res x y = if or [tmp u v>=0 | u<-[x,x+res], v<-[y,y+res]]
+>                       then Just (z,hexColor "#AD4") 
+>                       else Nothing
+>                     where tmp x y = (x**2 + y**2)
+>                           protectSqrt t = if t<0 then 0 else sqrt t
+>                           z = sqrt (a**2 - (c - protectSqrt(tmp x y))**2)
+>                           a = 0.2
+>                           c = 0.5
 > shapeFunc :: Scalar -> Function3D
 > shapeFunc res x y = 
 >   let 
@@ -165,13 +181,13 @@ All the rest is exactly the same.
 >   if and [ findMaxOrdFor (ymandel (x+xeps) (y+yeps)) 0 1 20 < 0.000001 |
 >               val <- [res], xeps <- [-val,val], yeps<-[-val,val]]
 >       then Nothing 
->       else Just (z,colorFromValue ((ymandel x y z) * 64))
+>       else Just (z,colorFromValue 0)
 > 
 > colorFromValue :: Point -> Color
 > colorFromValue n =
 >   let 
 >       t :: Point -> Scalar
->       t i = 0.7 + 0.3*cos( i / 10 )
+>       t i = 0.0 + 0.5*cos( i /10 )
 >   in
 >     makeColor (t n) (t (n+5)) (t (n+10))
 > 
diff --git a/06_Mandelbulb/YGL.hs b/06_Mandelbulb/YGL.hs
index a645809..a4b5c94 100644
--- a/06_Mandelbulb/YGL.hs
+++ b/06_Mandelbulb/YGL.hs
@@ -230,26 +230,24 @@ yMainLoop inputActionMap
           Just (keyboardMouse inputActionMap worldRef)
   -- We generate one frame using the callback
   displayCallback $= display worldRef
+  normalize $= Enabled -- let OpenGL resize normal vectors to unity
+  shadeModel $= Smooth
   -- Lights
   lighting $= Enabled
-  ambient (Light 0) $= Color4 0 0 0 1
+  ambient (Light 0) $= Color4 0.5 0.5 0.5 1
   diffuse (Light 0) $= Color4 1 1 1 1
-  specular (Light 0) $= Color4 1 1 1 1
-  position (Light 0) $= Vertex4 1 1 0 1
+  -- specular (Light 0) $= Color4 1 1 1 1
+  -- position (Light 0) $= Vertex4 (-5) 5 10 0
   light (Light 0) $= Enabled
-  ambient (Light 1) $= Color4 0 0 0 1
-  diffuse (Light 1) $= Color4 1 0.9 0.0 1
-  specular (Light 1) $= Color4 1 1 1 1
-  position (Light 1) $= Vertex4 0 0 1 1
-  light (Light 1) $= Enabled
+  pointSmooth $= Enabled
+  
   colorMaterial $= Just (Front,AmbientAndDiffuse)
-  -- materialDiffuse Front $= Color4 0.5 0.5 0.5 1 
-  materialDiffuse Front $= Color4 0.5 0.5 0.5 1 
-  materialAmbient Front $= Color4 0.5 0.5 0.5 1 
-  materialSpecular Front $= Color4 0.2 0.2 0.2 1 
-  materialEmission Front $= Color4 0.3 0.3 0.3 1
-  materialShininess Front $= 1.0
+  materialAmbient Front $= Color4 0.0 0.0 0.0 1 
+  materialDiffuse Front $= Color4 0.0 0.0 0.0 1 
+  materialSpecular Front $= Color4 1 1 1 1
+  materialEmission Front $= Color4 0.0 0.0 0.0 1
   -- We enter the main loop
+  materialShininess Front $= 96
   mainLoop
 
 -- When no user input entered do nothing