The Jungle Book's Indian Jungle
Ken Anderson and background painter Al Dempster were involved in the development these color studies for the film. Ken also did initial sketches for the main character that stuck until the definition of the animated character.
"As you know, Walt Disney opted for a light, airy jungle, since the story included mostly comedic sequences. Dark, mysterious backgrounds would have worked for a more dramatic story treatment." -Andreas Deja
Source: Deja View