Growth is the major characteristic of the Colonial period. Villages grew larger, with clusters of houses opening on a common courtyard. There is some evidence of social stratification in larger homes and more ornate grave goods. Area and canal systems expanded, and tobacco and agave production began. Mexican influence increased. In larger communities, the first Hohokam ball courts were constructed and served as focal points for games and ceremonies. Pottery was embellished by the addition of an iron stained slip, which produced a distinctive red-on-buff ware.