There isn't really a tradition of the laity "color-coordinating" according to feast days, but the colors blue (humility) and white (purity) are associated with Our Lady. And the Priests vestments are white on this day.
In addition to Sunday, the days to be observed as holy days of obligation in the Latin Rite dioceses of the United States of America, are as follows: January 1, the solemnity of Mary, Mother of God; Thursday of the Sixth Week of Easter, the solemnity of the Ascension; August 15, the solemnity of the Assumption of the Blessed Virgin Mary; November 1, the solemnity of All Saints; December 8, the solemnity of the Immaculate Conception; December 25, the solemnity of the Nativity of Our Lord Jesus Christ. Whenever January 1, the solemnity of Mary, Mother of God, or August 15, the solemnity of the Assumption, or November 1, the solemnity of All Saints, falls on a Saturday or on a Monday, the precept to attend Mass is abrogated.
Besides Sundays, Catholics are also obliged to attend Mass on Holy Days of Obligation. In the United States, the Holy Days of Obligation for Catholics of the Latin Rite are:January 1, the solemnity of Mary, Mother of God;Thursday of the Sixth Week of Easter, the solemnity of the Ascension;August 15, the solemnity of the Assumption of the Blessed Virgin Mary;November 1, the solemnity of All Saints;December 8, the solemnity of the Immaculate Conception;December 25, the solemnity of the Nativity of Our Lord Jesus Christ.Whenever January 1, the solemnity of Mary, Mother of God, or August 15, the solemnity of the Assumption, or November 1, the solemnity of All Saints, falls on a Saturday or on a Monday, the precept to attend Mass is abrogated.
On all Sundays and Solemnities (Christmas, All Saints, Immaculate Conception, Assumption, etc.) there are three (well, four if you count the psalm), usually an Old Testament reading, a psalm, a New Testament reading, and the Gospel. Weekday Masses only have one reading, the psalm, and the Gospel, there is no second reading on a non-solemnity.
The anticipated Mass or the Vigil of the Solemnity of the Blessed Virgin Mary.
January 1 is a Solemnity, a major feast day, in the Catholic Church -the Solemnity of the Blessed Virgin Mary.
The third reading is always the Gospel on a Sunday or Solemnity.
Which Vigil Mass? Every major solemnity has a Vigil Mass and communion is distributed at each one. Eg: Christmas Vigil, Holy Saturday Easter Vigil, Pentecost Vigil, etc.
In the United States many Catholics celebrate 3 holy days. These holy days consist of Solemnity of the Virgin Mary, Feast of the Assumption, and Solemnity of All Saints. If you would like to learn about additional holy days in Catholicism see the link below.
Yes, August 15. Officially this is considered a Holy Day of Obligation, but the US Bishops have abrogated the requirement to atttend Mass for certain Holy Days that fall on either Saturday or Monday, and Assumption is one of these. Thus, in the US there is no obligation to attend Mass on the Feast of the Assumption in 2009.
The First Mass of Lent is the Mass on Ash Wednesday, at which ashes are imposed on the foreheads of the faithful after the homily. It has no special name, and despite the fact that it isn't even a Feast or a Solemnity, it has two readings before the Gospel, like a Solemnity (in the old Calendar it carried the rank of First Class-apparently it has no ranking at all anymore, not even that of an optional memorial, rather strange).
1 January: Solemnity of Mary, Mother of God 6 January: the Epiphany 19 March: Solemnity of St. Joseph, Husband of the Blessed Virgin Mary Thursday of the sixth week of Easter: the Ascension Thursday after Trinity Sunday: the Body and Blood of Christ 29 June: Solemnity of Saints Peter and Paul, Apostles 15 August: the Assumption of the Blessed Virgin Mary 1 November: All Saints 8 December: the Feast of the Immaculate Conception of the Blessed Virgin Mary 25 December: the Nativity of our Lord Jesus Christ (Christmas) All Sundays These are the Feasts that are mentioned in Canon Law as Holy Days of Obligation, but the Canon also stipulates that each territories Bishop conference can abrogate or transfer Holy Days if they wish. For instance, in the US The Ascension and the Feast of The Body and Blood of Christ is always moved to the following Sunday, the Feast of Saint Joseph is abrogated, and whenever the Feasts of Mary, the Mother of God, The Assumption, or All Saints falls on a Monday or Saturday Mass attendance isn't required.
Catholics are expected to go to mass on Sunday (or Saturday) and saint's days such as Christmas, New Years, The Solemnity of Mary Mother of God, The Ascension, All Saint's Day, and Immaculate Conception. Mass is generally inside a church but a priest can perform a mass anywhere.