Yes according to the "Triumph Register of America TR4/4A Judging Guidelines" the TR4 came with the Salt and Pepper Gray Loop carpeting only and it was not until the TR4A that Wilton Wool cut pile in several colors became available in the TR4/4A series cars. Black, Red and Midnight Blue were the original TR4A carpet colors available.
Also for the TR4, rubber mats were originally provided for the footwell floor carpeting and not the Salt and Pepper Gray Loop carpeting. Those original style floor mats are no longer available and the modern carpet suppliers supply carpeting pieces for those two areas of the floor from the front edge of the seats the the mat clips located several inches up the firewall from the forward most part of the floor. Not sure, but I believe the TR4A came from the factory with carpet in this area.
I have the same Moss carpet set Mink and it is very close to the original carpeting that was in my car.