anchor.diff:  
   === Simple example: rendering a solid color on an object
   
  -Here is the simplest application to shaders, rendering a solid color. 
  -
  -Vertex Shader: 
  +Here is the simplest application to shaders, rendering a solid color.
  +
  +Vertex Shader:
   
   [source,java]
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positive.code: 
  === Example: Adding Color Keying to the Lighting.j3md Material Definition
  
  Color Keying is useful in games involving many players. It consists of adding some player-specific color on models textures. The easiest way of doing this is to use a keyMap which will contain the amount of color to add in its alpha channel. 
  
  Here I will use this color map: +
  link:http://wstaw.org/m/2011/10/24/plasma-desktopxB2787.jpg[http://wstaw.org/m/2011/10/24/plasma-desktopxB2787.jpg] +
  to blend color on this texture: +
  link:http://wstaw.org/m/2011/10/24/plasma-desktopbq2787.jpg[http://wstaw.org/m/2011/10/24/plasma-desktopbq2787.jpg] 
  
  We need to pass 2 new parameters to the Lighting.j3md definition, MaterialParameters section:
  
  
negative.code: 
  ----
  
  Fragment Shader :
  
  [source,java]
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