A method 21 wherein {TAIL ~ the at least partially reflective layer} comprises {HEAD ~ a substantially completely reflective metal} 
A method 21 wherein { TAIL ~ the at least partially reflective layer } comprises { HEAD ~ a substantially completely reflective metal }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD