Today will see the last use of green as a liturgical colour until after the Octave of the Epiphany.
In the last week before Advent the 'Minor Prophets' supply occuring scripture for Mattins with a different Incipit for each day. In some years this can lead to some 'leap-frogging' to get them all read but this year it is relatively simple with Nahum on Monday, Habacuc on Tuesday, Sophonias on Wednesday and Aggeus on Thursday.
Today becomes slightly more interesting because Saturday is the Vigil of St. Andrew the Apostle and thus has proper lessons. So in today's ferial nocturn the first and second lesson are from Zacharias but the third lesson is anticipated from Malachias that was due to be read on Saturday.
The rest of the day is that of a feria, Suffrage of the Saints at Lauds, Dominical preces at Prime. At Mass the Gloria is not sung, the second collect is A cunctis the third chosen by the celebrant or Dean. Benedicamus Domino is sung as the dismissal.
Vespers are ferial with a commemoration of St. Saturninus and the Suffrage of the Saints. The Dominical preces are sung at Compline.