If speed is a concern, among other things, you might move the declaration of @colors out into an enclosing block: 
{ my @colors=(...);
  sub colorize {
    ...
  }
}

[download]
This way, @colors will still have only be 'locally' visible to colorize, but it will only be created once, at load-time, instead of every time you call colorize();.

In reply to Re^3: Colorize by tlilley
in thread Colorize by WrongWay

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