Will someone please describe chromophores in detail?
No. Nobody is going to write you a monograph. That's not what this forum is for.
What research of your own have you done? I was not familiar with the terms "biochrome" and "structural color" until I googled them just now, and now I have some idea. Why not read a few articles, and come back if you have any specific
(Note: if you really want to know "why i am seeing a color", that is not just a matter of chromophores, but involves the physiology of the eye and the psychology of the brain. But that might not be what you are really after.)