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           _    _     _  _      ___      _  _   
  ____    | || | ||  | \| ||   / _ \\   | \| || 
 |    \\  | || | ||  |  ' ||  / //\ \\  |  ' || 
 | [] ||  | \\_/ ||  | .  || |  ___  || | .  || 
 |  __//   \____//   |_|\_|| |_||  |_|| |_|\_|| 
 |_|`-`     `---`    `-` -`  `-`   `-`  `-` -`  
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Text this: Color Models as Tools in Teaching Mathematics