it may be of topic´but its very interesting, I wonder that pigments are unknow before Moghal time. that means that the old idian culture dont have coloured pictures, rigth? hard to believe that a country(I know its more a continent)dont have most time colours. maybe I have to understand it in the way that colours making of and with pigments are unknow in old india but they have more primitive colours making from plants which can't stand long time special in tropical climate?