Satellite data from 2003 is coloured red, 1998 is coloured green and 1992 is blue. The three data sets are composited to form the image. Nighttime lights on the map that are white are lights that were present throughout the entire period. Areas that are marked by red have only appeared in 2003. Areas coloured green and blue were only present in 1998 and 1992 respectively but are no longer visible. This image was created by the Defense Meteorological Satellite Program (DMSP), National Oceanic & Atmospheric Administration, USA.
It should be noted that not only does this have the benefit of being true, it also makes the image much more awesome than something that just says “India does pretty colours sometimes”.
It’s also worth pointing out that the tweet above has over 14,000 retweets and 4,500+ favourites, and hasn’t had a follow-up correction. As a general rule, if you see a Twitter account that’s called something like “Mindblowing Facts”, it’s probably fairly safe to mentally substitute the words “Deluge of Bollocks” in place of the name.