Ferngully - Backgrounds & Foliage

I recently watched the 1992 animation Ferngully; The Last Rainforest.

The animation style is mainly animation of the characters with little secondary animation & background animation. They background shots are mainly layered images of forest & foliage, incorporating camera moves & panning to show the vastness of the rainforest.

I thought these images were good examples of how the use of colour & lighting could create a sense of depth & a 3D space.