My suggestion would be to opt for Pine Green color as it looks beautiful in person, you can't judge that color in photos.
Camera quality is very good specifically for the wide angle camera as I've used my friend's iphone 12's camera and I liked 9 Pro's wide angle camera as it's much better to that of iPhone's.
Adding few photos I shot of the phone. I will update this review after using it for few more days with some photos.
Update after using the phone for 11 days (11 Apr 2021):
Phone is working very smoothly, no overheating issues in gaming or regular usage. First few days I noticed that it was overheating during camera use under harsh sunlight and stopping camera from shooting photo/videos.
But from last update I'm yet to encounter that issue again. Looks like they have fixed it already.
Battery life is average...not bad...not good. But works for me for full day use.
12 Bit raw file out of this phone's camera is amazing with full of details. Use it to understand it. It is any day better compared to iPhone 12 or 12 pro's camera in term of colour accuracy and details. Not to forget about huge price difference between these phones. At 70k OnePlus 9 Pro is worth every rupee.
Update: 26th April 2021
After the latest update battery performance is improved. 5 days with this new update 11.2.4.4 and I'm getting 7+ hrs most of the time, sometime 8+ hrs. Adding a screenshot for the same.
Over sharpening in the photos taken with cameras now sorted. Photos look beautiful.