During the Bronze Age, both the Minoans and the Mycenaeans used pebble floors. In the seventh century BCE, the Near East used a similar design, but with repeated themes. The first attempts at pebble pavement in Greece date back to the 5th century BCE, with examples found at Olynthus and Corinth. They were frequently two-toned, with light geometric designs and simple forms set against a black backdrop. These mosaics were usually reinforced by inlaying clay or lead bits, which were commonly used to outline shapes.