Been driving around with my stainless steel/aluminum fender mirrors for a few years now but have always wanted the black JDM oe style.  So here is how I got my fix... 
  
Disassembled the mirrors, took them to my powdercoater and had him match the OE black mirrors.  Had all the steel hardware replated so they now look, well-correct. 
  
Pics; 
before, taken apart and ready for powdercoating 
 
 
after, ready to assemble! 
 
So, which are the imposters? 
 
  
Years ago I scored a NOS pair of black fender mirrors but have never installed them.  Figured with my luck as soon as I did they'd break or something.