[N!ck]

here's an example:

PHP Code:

<?
$color = "firstaltcolor";
 while (SOME CONDITION HERE) {
  $rowcolor = "{" . $color . "}";
  eval("\$something .= \"".gettemplate("SOMETHINGbit")."\";");
  if ($color == "firstaltcolor") {
   $color = "secondaltcolor";
  } else {
   $color = "firstaltcolor";
  }
 }
eval("dooutput(\"".gettemplate("SOMETHING")."\");");
?>

now, in SOMETHINGbit (for instance, forumdisplaybit), use $rowcolor.

if there's errors, post and i'll fix them; i haven't tested this