My baby is fair when she was born but after that she lost her colour day by day her ears was black when she born is her original colour

Newborns tend to be changing colour until 1 year of age.

After feed give him iron drops n evening time after feed give d3 drops.for 1 years.about doses tell with drs.and give massage with DAbur oil.when baby empty stomach ,in morning

Do not worry at all. Small babies changes their complexion as they grows. It is completely normal. Breastfeed your baby properly and use good brand products to keep skin healthy and nourished. Like himalaya or mee mee or chicco or sebamed or mamaerth. Personally I am using mamaerth baby products range for my daughter. They are suitable for baby's soft skin as they are paraben and SLS free dermatologically tested products.

Babies colour keep changing until one year...
And colour depends on genes of parents and the environment you are living...

So don't think much about the colour...

Jus use the best baby products and feed your baby on time and on demand...

Completely normal dear. Babies tends to change their colour while growing. So do take any tension. Enjoy your motherhood. Use natural products. I am using mamaerth moisturising soap that is not at all harsh on baby's soft skin. It keeps skin soft and smooth without making it rough or dry.