For Venezuela the smaller map on the side includes black and brown populations together, with the aforementioned caveat of indigenous people being included in those categories.
Yeah, I suppose the map would look much different if this rule was applied to other countries.
The Black population in Venezuela is pretty low, IIRC they're mostly concentrated in the Barlovento region of Miranda, as well as a few coastal towns in Aragua.
I do have to ask why you did it for Brazil and not for Venezuela, though.