Finally, the decoration of a Greek Temple comprised not only sculpture, but also painting. A large part of every Doric temple was covered with strong, bright colours, while certain prominent details were treated with elaborate patterns. The figures of the sculpture also were painted and relieved against a background of contrasted colour. It has been discovered that the triglyphs were painted blue and the metopes red and that the mouldings were decorated with ornament in red, blue, green, and gold. The walls and the columns were probably stained yellow or buff, perhaps by the use of wax melted on the surface (_encaustic_). =Asymmetries or Refinements.=--It might seem that, in the various particulars we have noted, Hellenic intellect and feeling had exhausted the possibilities of refinement. But there is yet another instance, which was first revealed by the detailed measurements of Hellenic temples made independently by two Englishmen, Francis Cranmer Penrose and John Pennethorne, and by a German architect, Joseph Hoffer. The results were published in 1838 and in 1851, and have been corroborated by other students. They are known as architectural “refinements” or “asymmetries.” It had been assumed that, since the form of the temple type was apparently symmetrical, it also involved absolute symmetry of details; that geometrical regularity and mathematical accuracy were the necessary and natural conditions of the architectural design. By those investigators, however, it was discovered that though the principles of geometry and mathematics were the foundation of the planning and designing, regularity and accuracy were purposely avoided; and that so far from the details being symmetrical they exhibit intentional asymmetries. One of these irregularities is the substitution of curved for straight lines. We have already mentioned the entasis or swell in the vertical contour of the column--a fact not observed by modern architects until 1810; but curvature is also found in the horizontal lines of the stylobate and the architrave, frieze, and cornice, and in the gable lines of the pediments. And since these were discovered other variations of equal importance and significance have been found.