Array Question

I am using the following array and function in the template for my website. It works great, but I want to to be better. I would to make it so the last item displayed looks differently than the others, but I have been unable to figure out how to distinguish the last item.

When displayed, the crumbs look like:

SITENAME » RANDOM » ITEM

I would like ITEM to look differently. Can anyone tell me how to modify the last ITEM?

	// CRUMBS ARRAY
	$crumbs = array(
		array( "RANDOM", "RANDOM_URL" ),
		array( "ITEM", "ITEM_URL" )
		);

	// CRUMBS FUNCTION
	function breadCrumbs($crumbs) {
	
		if ( count($crumbs) > 0 ) { 
			$spacer	   = " » ";
			$breadCrumbs  = "SITE_NAME\n";
	
			foreach( $crumbs as $crumb ) {
				if ( count($crumb) == "2" ) {
					$breadCrumbs .=  "$spacer$crumb[0]\n";
				}
			}
	
		echo "\n";
		echo "\n";
		echo $breadCrumbs;
		echo "\n";
		echo "\n";
	
		}
	}