Typically the figure of Death is depicted as wearing a black robe, but here it's white. Is this just a random fashion choice? Were black robes just not in for supernatural beings the year Troy wrestled with Death?
We're guessing there's a larger significance, since black-white racial issues are such a big deal in the play. It could be seen as a deliberate rejection of the idea that the color black should symbolize death. Some might see it as offensive that the same color often used to represent death (as well as evil) is also used to describe African Americans.
Death's white robes and hood might also be seen as representing the Ku Klux Klan, the white supremacist group responsible for so many hate crimes in the American South. The typical uniform for KKK members was (and still is) white robes and hoods. Perhaps by equating Death with the Klan, the play is referencing the many African Americans who lost their lives (literally and metaphorically) to white oppression.