A cover of Shankar–Ehsaan–Loy's elegant composition from Bhaag Milkha Bhaag.

The lyrics are beautiful, here is a brief selection:

O rangrez tere rang dariya mein
Doobna hai bas tera ban ke
Haaye nahin rehna dooja ban ke

Ek bhi saans alag nahin leni
Khench lena praan is tan ke
Haaye nahin rehna dooja ban ke

O dyer (one who adds color to fabric)
Drowning in your river of colors, I will become yours
I don't want to remain separated from you

I will not take a single breath away from you
Pull the life out of my body
I don't want to remain separated from you

O Rangrez

Vishrut