Welcome Ben!

I'm from Karnataka myself (not Bangalore though).
You might want to try G K Vale. They'll at least have some color film.

For B/W, try Amazon. They've just recently launched in India and I've seen some B/W available on the site, though a bit on the expensive side.

Maybe this will help:
http://www.flickr.com%2Fgroups%2Ffil...48705608,d.cGE

Cheers,
Som