The Targa should have a black  top and   flat black  roll hoop  as per the late 70s/80s model , not the 60s /early 70s style bright aluminum hoop as per this pic, since there is  very little  chrome on the modern 911 to balance it visually

Having said that, my first 911 was a triple black  Targa, chosen because the first gen cabs back in the mid 80s had  tops  , raised or esp lowered that were ,IMO, not attractive .  The 991 cab now has the  sleekest  top , raised or lowered , of any 911 and I would chose that over even a retro hoop style Targa .