ויקרא יג:מט פירוש: רש״י ורבנו בחיי

ירקרק denotes green amongst the greens (the deepest green).

או בכל כלי עור, “or in a leather utensil;” our sages explain that this excludes coloured vessels. utensils or garments. The main practical significance of this statement is that wool or linen confer the wearer’s impurity only when they are in the original white colour. The rules applying to dyed wool garments also apply to dyed leather utensils.

אדמדם — the deepest red (Sifra, Tazria Parashat Nega'im, Chapter 14 2).