So I have done a few black and white paintings with geneva paint, using titanium white and geneva black. I have noticed when it comes to the greys they tend to be more of a brownish grey. Anyone else notice this? Any tips on how to get more of a true grey? Im sure I could just add some of the geneva blue to the geneva black, to get it more on the blue side but wondering if anyone has used anything other than geneva paints for their grey with better results?