What is Green, White, Blue and Yellow revolution?

What is Green, White, Blue and Yellow revolution?

Green revolution:
green revolution is a process of increasing in crop production of grains by using artificial fertilizers, high yield crop varieties etc.

White revolution:
white revolution is a revolution made for increasing the production of milk which is also known as operation flood in india.

Blue revolution:
blue revolution refers to the increase in the production of aquaculture(i.e production of all kinds aquatic animals like animals and plants occuring in marine and fresh waters etc)

Yellow revolution:
yellow revolution defines increase in the oil production.