The world's four most expensive paints are dying of old age. Who or what replaces them?

The world's four most expensive paints are titanium white, ultramarine blue, rose madder and cadmium red. With all of the four paints being of natural origin, we need to find a new way of producing them. Maybe it's magical, maybe its futuristic, maybe it's historical and we've been doing it for centuries but just forgot about it.<br><br>Your choice.<br><br>EDIT: A massive thank you for the awards, I cannot believe this post has got so many. I have been very spoilt and I'm going to have to write something for these because they are so good.