The plane is a Pietenpaul Sky Camper, pretty much a home built from the 30's powered by either a Model T or Model A engine. That one is in the Model T Museum in Richmond, Indiana. Several still flying and a treat to watch.
T's and other letter cars prior to 1913 were essentially hand painted and rubbed lacquer, like the better coaches of the day, and very labor intensive. Introduction of the moving assembly line required a faster drying paint, and the only thing available was Japan Black. Not until 1926 when the DuPont pyroxylin paints became available did color reappear, and then only very dark, all but black, maroon, green and blue.
Very nice job on the model, only thing I cringe at a little are the chrome wheels. All factory wheels at that point were wooden spoke, carefully painted and beautifully pin striped. These were eventually replaced in 1926 with steel spoke wheels like on the Model A, none of which were ever chromed. Hayes made an accessory wire wheel for Ts that are highly sought after by collectors, but they were left a natural dull steel color.
That's just me though...