you can

steps are:

1)when you are changing the skin colour in advance colours -remember the colour of the skin

2)go in clothes ,in underwear -than change the colour of the underwear to the skin colour and shade it more

3)do it same on the lower also

it depends on your gene. there are dominant and recessive gene present. and for skin colour, bright colour are dominant over dark colour. if the both the parent are bright skin colour but the children is dark skin colour. there are possibilities where the recessive gene present in one or both parent. under certain circumstances the recessive gene will show its trait instead of the dominant gene. that's why some parent skin colour is different from the childrens' skin colour

By hydration of skin

what colour skin is your skin? This is the easiest question coz you know what colour your skin is. U can see it.

No, unless you are an amphibian