parse only content from node containing CDATA using DOM

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I am using php5 to parse node content from a xml file. Could someone show me  
if it's possible to to print the content without the ![CDATA[]] tags in the  
following codes ? Thank you in advance

$colors = $doc->getElementsByTagName("color");

foreach($colors as $node) {
  // to print only 'red' without the ![CDATA[]] tags  as in  
  // I have tried the following lines but none of them worked, just printed  
out emptry string
  echo $node->textContent;
  echo $node->firstChild->nodeValue;
  echo $node->firstChild->data;

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