I've got a function that accepts a comma-delim string of RGB values between 0 and 255. I need to convert that to an array of 3 values between 0 and 1. This is for a module I'm working on for release to CPAN, so this will be the first time I'm seeing these values. The input-massaging code I have right now is: 
   my ($color, ...) = @_;

   $color ||= '';
   my @colors =
      map { s/[^\d.-]//g; $_ ||= 0; $_ < 0 ? 0 : $_ / 255 }
      (split(/\s*,\s*/, $color, 4), (0) x 3)[0..2];

[download]
Can anyone see that I missed anything? Are there any improvements I can make? Am I being too anal or DWIM-ish? Right now, I have no error messages back to the user. Is this a bad thing? As for the line-noise potential, this is the only place this logic will be used. (One idea, one place kind of thing.)

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In reply to DWIM on sub input by dragonchild

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