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my %colorhash = ( 
  CCgray  => "0",
...
  CCBlue  => "0",
  "0"     => "3",
);

my %colorhash = ( 
  CCgray  => [ "0","0","0" ], 
...
  CCgrey  => [ "0","2","0" ],
  CCBlue  => [ "0","0","3" ],
);

my %colorhash = ( 
  CCgray  => [ 0, 0, 0 ], 
...
  CCgrey  => [ 0, 2, 0 ],
  CCBlue  => [ 0, 0, 3 ],
);