White vestments are worn
Off-white is NOT a liturgical color approved by the Catholic Church.
A priest's vestment is generally white when it's Easter. On special occasions, however, a priest might wear gold in white's place.
alb
During Baptism the color of priest vestment is WHITE.
The priest wears an alb ( usually white) that goes from neck to toe; over the alb he wears a vestment called a chasuble. If not wearing the chasuble he will wear stole over the alb. The chasuble and stole are the colors of the season.
.Catholic AnswerInstead of violet, for a funeral he can substitute white or black. On the third Sunday of Advent and the fourth Sunday of Lent he can substitute Rose.
The vestment color would be the seasonal color. Catherine's feast day is on April 29 and, normally, would be green (Ordinary Time) but would be white if the feast occurred during the Easter Season.
Often, a banner matching priest vestment color is in front of altar, the color being associated with the church time, like purple as it is in Lent. It does not always match; if priest is doing funeral he will wear white but the altar may still be purple.
If an altar server is wearing a black or red vestment that is full length that is called a cassock. A short white vestment worn over the black or red long vestment is called a surplice. A white vestment if full length is called an alb .
It is an outer vestment worn by a priest.
The white vestment worn by the priest is called an alb ( from the latin "albus", meaning "white"). It also worn by deacons, servers, and occasionally Eucharistic ministers. A white vestment placed over the alb at Mass is called a chasuble for priests and dalmatic for daecons. That can be red, green, violet, or white. White is worn during certain liturgical seasons and holy days, but the alb is always white, sometimes "off" white or ivory.