lekythoi. Polygnotos and the Kleophon Painter can be included in the school of the Niobid Painter, as their work indicates something of the influence of the Parthenon sculptures both in theme (e.g., Polygnotos's centauromachy, Brussels, Musées Royaux A. & Hist., A 134) and in feeling for composition. Toward the end of the century, the "Rich" style of Attic sculpture as seen in the Nike Balustrade is reflected in contemporary vase painting with an ever-greater attention to incidental detail, such as hair and jewellery. The Meidias Painter is usually most closely identified with this style. Vase production in Athens stopped around 330–320 BC possibly due to Alexander the Great's control of the city, and had been in slow decline over the 4th century along with the political fortunes of Athens itself. However, vase production continued in the 4th and 3rd centuries in the Greek colonies of southern Italy where five regional styles may be distinguished. These are the Apulian, Lucanian, Sicilian, Campanian and Paestan. Red-figure work flourished there with the distinctive addition of polychromatic painting and in the case of the Black Sea colony of Panticapeum the gilded work of the Kerch Style. Several noteworthy artists' work comes down to us including the Darius Painter and the Underworld Painter, both active in the late 4th century, whose crowded polychromatic scenes often essay a complexity of emotion not attempted by earlier painters. Their work represents a late mannerist phase to the achievement of Greek vase painting. White ground technique The white-ground technique was developed at the end of the 6th century BC. Unlike the better-known black-figure and red-figure techniques, its coloration was not achieved through the application and firing of slips but through the use of paints and gilding on a surface of white clay. It allowed for a higher level of polychromy than the other techniques, although the vases end up less visually striking. The technique gained great importance during the 5th and 4th centuries, especially in the form of small lekythoi that became typical grave offerings. Important representatives include its inventor, the Achilles Painter, as well as Psiax, the Pistoxenos Painter, and the Thanatos Painter. Relief and plastic vases Relief and plastic vases became particularly popular in the 4th century BC and continued being manufactured in the Hellenistic period. They were inspired by the so-called "rich style" developed mainly in Attica after 420 BC. The main features were the multi-figured