Traditionally, there is not "Ordinary Time", but only Sundays after Epiphany and Sundays after Pentecost. The only time that Green is worn is Sundays during these times that are not feast days. Green represents Hope.
The different pieces of this set were not made all at once, but their development was quite spread out! Since the color of the Chasuble, Dalmatic, and Tunicle seem quite close to blue, a dark green set the color of the Cope and Humeral Veil is in the making. This set also has two Chasubles: a Roman one and a Gothic one.