My Kanayama linen is darkened in the work area. It has no compound on it.
My home made canvas one loaded with Dovo white is quite black tho it's done a fraction of the work of the Kanayama.
My friend Oz is one of many that I consider a good friend! And one who has more experience and expertize than I will ever have and when he or one of those others speak I listen and I listen very closely