Monochrome

But Nature increasingly lost its colors, and signs of illness were evident in many places
This did not disturb the Goblins at all
On the contrary, it was a challenge to them to invent tools that could provide them with more colors
And they built machines that would advance them more swiftly in the earth, water and air

The more they indulged their greed for colors, the paler and more sickly Nature became
It had turned grey and monochrome, and one day it simply ceased to exist