It depends on what color the wheat used is. The Eucharist can be confected validly with common wheat flour, or with whole wheat flour. The first renders the Eucharist white, or off-white, the later renders it reddish or brown.
"actually its white. black is a colour made up from other colours. white, has no colour but is still classified as a colour. " actually white is all the colors at once, think about light, and black...
This is a simple question with a difficult answer that im not going to try to get into detail with because honestly I don't know all the details. Certain things are made what color they are from the...