Why are carrots red?

Carrots are usually said to be orange colored. This is what is the usual color of carrots in western countries and southern India. Yet, I have seen carrots such intensely deep red colored that it sometimes seems to me as if brown colored. Doesn't matter how dense the color density is, it is actually due to a chemical 'Carotene'.

The word 'Carotene' seems to be derived from the word 'Carrot' itself though I did not get any reference for its name derivation.

And why are carrots good for eyes? Well, it again points to carotene. It is said that we get Vitamin A from carrots. But it is not completely true. The actual fact is as below:
Retinal + Water --> Carotene and this is a reversible reaction.
So we get,
Carotene ----> Retinal + Water.
This retinal binds with a retinol attaching protein in the human body and gets converted to retinol. Now this retinol is what we require for Eyes. The fun fact is that retinol is common name for Vitamin A.

Tech Fact: Usually, the color RED is associated with word 'ERYTHROS' in biology, eg: erythrocytes (RBC), Erythrina (a red colored plant) etc.

Tech Fact: The carrot is an example of Conical Tap Root System.

Tech Fact: Rabbits love carrots only due to high sugar content in it. Nothing else special. They will love grapes even more if you provide them. This high sugar content make carrots an ideal ingredient in many Indian food recipes.