The obligation of priests to dress as priests in public

  In a secularized and tendentiously materialistic society, where even the external signs of sacred and supernatural realities tend to be disappearing, the necessity is particularly felt that the priest – man of God, dispenser of His mysteries – should be recognizable in the sight of the community, even through the clothing he wears, as an unmistakable sign of his dedication and of his identity as a recipient of a public ministry. The priest should be recognizable above all through his behavior, but also through his dressing in a way that renders immediately perceptible to all the faithful, even to all men, his identity and his belonging to God and to the Church. For this reason, the cleric should wear "suitable clerical clothing

Propaganda Fide Black double breasted cassock, red pipings and buttons, scarlet sash and strings (photo at left)

Germanic College Scarlet Cassock, black sash, scarlet soprana with pendant strings (Masson notes that they had the nickname 'gamberi cotti' or 'boiled lobsters' and that their distinctive dress was imposed due to their reputation for uproarious behaviour)
Greek College Blue cassock, red sash and pipings, blue soprana with strings - out of doors: a black soprana with wide sleeves
English College Black cassock and soprana, black strings and no sash

Scots College Purple cassock with crimson sash, buttons and pipings. Black soprana with pendant strings (photo at left)

Irish College Black cassock with red piping, no sash, black soprana and strings
French College The first college to abandon collegiate dress for the priest's cassock, no sash
Lombard College Black cassock, violet sash, soprana and strings
Seminary of SS. Peter and Paul Priest's dress with a black sash

QUAERITUR: the obligation of priests to dress as priests in public

 fonte:http://catinfor.com/en/2010/05/02/quaeritur-the-obligation-of-priests-to-dress-as-priests-in-public/