Out of curiosity I went browsing for an answer on how color pickers can retrieve color related pictures, which I guess depends on photographic histograms, I stumbled upon ALIPR (Automatic Linguistic Indexing of Pictures in Real-Time), the NOT so smart photo tagging/search engine.
It is supposed to be a smart photo search engine that knows exactly what you're looking for.
According to Gizmodo.com:
"An amazing innovation in the software world today: ALIPR (Automatic Linguistic Indexing of Pictures) is a program that takes a look at digital images, applies some fancy math and then spits out a list of appropriate tags for the picture. It isn't perfect, but the designers claim it has a 98 percent accuracy rate. They've been letting it dig through Flickr and the software has matched at least one user-defined tag almost every time." – Karson Thompson
The truth is, it's Far from smart. Even the messed up Ask.com returns better results than this crazy search engine. The only query that got me related results were "landscape historical desert", it returned two pictures of the Pyramids.
Note to self: Stick to Google, shut up and forget how experimental apps such as that color picker work.