Nail's usual colour will be, from light pink to red, irrespective of one's skin colour.

But for some people, it's colour might be dark like black.

Medical professionals used to check the nail's colour and shape as a symptom to diagnose the diseases.

We, from our Concept of Segment Numerology, would like to distinguish them by the Numbers.

If the combination of the following numbers come, 
either in Birth Segment, or in single digit value of Calling Name(s) and Name Segments, then their Nail's colour will be dark: 1, 4 and 8.

Even a single number of '8' in the Birth Segment, 
Calling Name(s) and Name Segment, alone will darken the nail's colour.

One's nail colour will be more dark, if 1 or 4 or 8 repeats with the same numbers of 1, 4, and 8.

If 1, 4, and 8 are associated with 3, 5 and 9, then also, their nails look dark.

If anybody NOT having the combination of 1, 4, and 8 or repeated numbers of 1, 4, and 8, then their nail's colour WILL NOT be dark!

So, avoiding 1 or 4 or 8 values, atleast in the Calling Name(s) and in the Name Segments, the darkness and the relevant diseases can be prevented & cured.

Please refer Diagnose your diseases & health risks to understand, prevent and treat ...!