Modulated transformation 2
It will be noted that many transformal paintings, like this one of Modulated Oltrarano, do not display true perceived colours. The reason for this is as follows. An object is perceived as coloured because it reflects light of a certain colour and that colour is received by the observing eye. The remainder of the visible spectrum is absorbed in the atomic structure of the object itself, and thus it can be considered that the object is intrinsically of that absorbed colour; the complementary colour to that observed. Thus for example the trees in Oltrarno are reflecting green light, and so are seen as green, but are absorbing red light which makes them intrinsically red. In many transformal paintings then the perceived colours of each scene are transformed into their complementary hues. Artistically this can be considered as relieving colour of its denotative function and can in a way be thought of as paralleling fauvism.