I think the moneywort stuff (or not) is mostly green with a lot of brown algae/diatoms.  Something like that.  It was a much differently colored green at one point in my other tank.    the leaves do grow like you're describing.
It's definitely not the same as the Rotala stuff I got in the mail today.
				
			It's definitely not the same as the Rotala stuff I got in the mail today.