This would be a great place to analyze the Munsell notations of things found in nature or anything else, really.
For example, average caucasian flesh is 5 YR 6/3. The range of flesh is between 10YR and 5 R; the latter includes the ruddy area. Values for flesh locals can be from 3 to 7. But 7 is really pales and 3 is quite dark. Chromas range between 2 and, rarely 6. Most ruddies are around 4-5.