Remove colons from form labels

// remove colons from form labels template.php
function phptemplate_form_element() {
  $arg = arg();
  $args = func_get_args();
  return preg_replace('@(\.*):\s*(<span.*?>.*?</span>)?\s*(</label>)@i', '$1$2$3',
    call_user_func_array('theme_form_element', $args));  
}