In historic buildings sculptures have often been painted after certain concepts of artistic composition and/or material illusion. The different types and principles of these composite polychromies together create the color aspect of a built space, but up to now in most cases they are studied or restored separately, neglecting their close coherence. In the last restoration of the gothic chapel of the former Courtyard of the Emperor in Vienna the attempt has been realized to set up and compare the stratographic profiles of the built surface with that of its polychromed sculptural decoration in the vaults and pillars. The results obtained were used for the objective criteria and documentation of how the interior of the chapel looked in its different periods and which phases of polychromy were historically and artistically correct for the actual restoration.