Living martyrdom.
There are in fact three kinds of martyrdom, which we may regard as types of cross in human eyes: namely, white martyrdom, green martyrdom, and red martyrdom. A person undergoes white martyrdom when he leaves all for the sake of Christ, even though this means fasting, hunger, and hard work. Green martyrdom is attributed to someone who through them—that is, fasting and work—is freed of his desires, or undergoes travail in sorrow and penance. Red martyrdom is found in the sufferings of a cross of death for Christ’s sake, as was the way of the apostles, because of the persecution of the wicked, and while preaching the truths of God. (Homily, dating from the late 600s or early 700s)