Dark Grass Block

Dark grass blocks are variants of dark dirt that cover most of the overwater surface of the Modernity. The grass on top has different colors for different biomes.

Dark grass blocks can only be obtained with a silk touch tool or with commands. When mined without silk touch, it will drop dark dirt instead.

Generation
Dark grass blocks generate as top block in every biome, except in forests, where humus covers the surface instead. Dark grass blocks do not generate underwater.

Growing and decaying
Dark grass has a chance to grow to close dark dirt blocks. For a grass block to grow to a dirt block, the following conditions must apply to that dirt block:
 * 1) The dirt block must not be covered by any full block or any fluid.
 * 2) The light level (either sky or diffuse light) of the block above must be more than 4.

In spite of the darkness in the Modernity, the sky emits full light (15). Therefore this condition is usually reached when exposed to the Modernity sky. Grass blocks do not grow to humus or coarse dark dirt.

Dark tall grass and other relevant plants can sustain upon this block.

Dark grass blocks can decay into dark dirt when an opaque block is placed upon, and that block does not emit any light.

Trivia

 * Dark grass blocks appear black in the overworld, as there is no close biome implementing a color for this grass block. This is a bug and will be solved soon.