Bony Smith of Tennessee. He was wounded carrying the colors of one of the Tennessee regiments in Archer's/Fry's Brigade during Pickett's Charge. His status with the regiment isn't clear, as far as I know.
Thanks, I googled him and found this:
During the battle of Gettysburg, two black Confederate soldiers took part in Pickett’s charge:
Color Corporal George B. Powell (14th Tennessee) went down during the advance. Boney Smith, a Black man attached to the regiment, took the colors and carried them forward. . . . The colors of the 14th Tennessee got within fifty feet of the east wall before Boney Smith hit the dirt ---wounded. Jabbing the flagstaff in the ground, he momentarily urged the regiment forward until the intense pressure forced the men to lie down to save their lives. (John Michael Priest, Into the Fight: Pickett’s Charge at Gettysburg, White Mane Books, 1998, pp. 128, 130-131) cited in http://www.mtgriffith.com/web_documents/blackconfederates.htm
Maybe someone with more time can check this Black Confederate out? If so - and it turns out to be true - I will buy into the thesis there was at least one.
There is an unproven account of a Black Body-Servant in the 14th Tennessee named Bony Smith, picking up the regiments flag and carrying it into Federal lines before he was killed.