Parament

A Parament or Parement; (from Late Latin paramentum, adornment, parare, to prepare, equip), a term applied by ancient writers to the hangings or ornaments of a room of state. Later it has referred to the liturgical hangings on and around the altar, as well as the cloths hanging from the pulpit and lectern, as well as the ecclesiastical vestments and mitres. In many usages, it is synonymous with altar cloth.

In most Christian churches using paraments (including Roman Catholic and a wide variety of Protestant denominations), the liturgical paraments change in color depending on the season of the church year. Advent = purple (or in some traditions, blue); Christmas = white; Lent = purple; Easter = white; Pentecost = red; "Common time" = green

...
Wikipedia