Do they have to be paint buckets? I would think they would not be good for gardening? Maybe others will know more about that. But in the U.S. you can get 5 gallon buckets from some local businesses like bakeries, food store chains, places like those that regularly use items they get in the buckets. For instance a bakery usually gets stuff in 5 gallon buckets and often has to throw them into a dumpster as they can only save so many. Some businesses now sell them for a small fee, maybe 1 dollar U.S. each and some just give them away. I think the cost of shipping them to India would be more than the cost of buying them. You could try setting up a fund on Kiva.org and possibly get enough donations to purchase food grade buckets instead of using ones from paint. Good luck with this project and please update us as to your progress.

what about pale orchid(7231) in asian paints?? is it good for accent wall?

White combination will look good otherwise if all dark then kitchen will look small

My bad. You want the exact shade as shown in the pic. I thought those are just reference images. I am sorry. But all the shades in the pic are different. The one you could go with is white cheese (L177) atleast that could be the nearest resemblance