Recently the Internet is going crazy debating the colors of the blue/white & gold dress.
So I decided to bring out one interesting fact about balloon's shadow.
photo source: https://www.flickr.com/photos/9837609@N08/
Yes they have colors!
Anybody can explain it in details? I can't find the explanation off the internet.
One interesting way to create colored shadows too, Part 1
& Part 2