Symbolism of Colours
,whether displayed in dresses, the background of pictures, or otherwise:
Green, faith, gladness, immortality, the resurrection of the just; (in dresses) the gladness of the faithful.
Grey, tribulation.
Purple, justice, royalty.
Rose-colour, martyrdom. Innocent III. says of martyrs and apostles, “Hi et illi sunt flores rosarum et lilia convallium.” (De Sacr. alto Myst., i. 64.)
Saffron, confessors.
Silver, chastity and purity.
Violet, penitence.