Was my compliment really inappropriate or too forward in the Indian context?

So today in this Cafe in Indiranagar area of our city Bangalore in India which is often called the Hipster neighborhood of the city, i saw this mixed gender group of men and women who are MBA students too. They were talking among themselves and i approached the women saying them hello. They responded and i said them just saying Hi to new people. They are Indians too by the way. So i asked them what they are studying and they said MBA. Then i replied that wow we are basically peers then as I am freshly done with my MBA. They smiled and said yeah So I asked both the women their names and they said it and I said my name too. Also asked which University and they answered and I answered mine too. So before ending the conversation, i gave a mild compliment to one of the woman i was talking to.

I said her "I was in a bit of a bad mood due to a bad dream at night but your smile has made my mood much better". She smiled and replied "Okay nice" and then i said "Okay have a great day" and walked away. The men in her group were staring at me full surprised as this is rare behavior in India. The women were definitely peers tho within 21-25 age range and I am also 25. I only complimented her smile tho so was it really too forward in a cold approach? I didnt even push for her number or Instagram. Is it really strange in india? Sadly plenty of Indian women are reserved and many Indian men are less confident due to conservatism in India but i did it in one of the most upscale part of the city.