1. A method of determining chromatic content of a page of an electronic document by using an image generating system, wherein the method comprises: performing object level color analysis on image objects of the page of the electronic document of the image generating system; determining, by the image generating system, whether the page is chromatic, achromatic or highlight color based on the object level color analysis; and classifying, by the image generating system, the page as chromatic, achromatic or highlight color.