Leviticus 13:49

if the mark is greenish or reddish in the garment or in the leather, or in the warp or in the woof, or in any article of leather, it is a leprous mark and shall be shown to the priest.

Treasury of Scripture Knowledge

Summary

And if the plague be greenish or reddish in the garment, or in the skin, either in the warp, or in the woof, or in any thing of skin; it is a plague of leprosy, and shall be shewed unto the priest:

General references

Bible References

It is

Leviticus 13:2
“When a man has on the skin of his body a swelling or a scab or a bright spot, and it becomes an infection of leprosy on the skin of his body, then he shall be brought to Aaron the priest or to one of his sons the priests.

General references

Leviticus 14:37
So he shall look at the mark, and if the mark on the walls of the house has greenish or reddish depressions and appears deeper than the surface,