Perma Green Grass and Snow Grass

I've included the two of these together because they're so similar. The P erma Green Grass is grass that stays bright green regardless of what biome it's in. Snow Grass is the snow covered grass that appeared in the game before snow-covers were introduced.

Perma Green Grass
The Perma Green Grass has been added primarily to give you grass that never changes colour. It would be useful if you were creating, say, an oasis in a desert biome. Vanilla grass changes colour and, in a desert world/biome, it would turn a dead shade of green. The Perma Green Grass would stay bright green, even in a desert world/biome, so it would allow you to create a thriving oasis.

Perma Green Grass - Crafting
There is a crafting recipe for the Perma Green Grass, should you want to use it in Survival. It's simply a Lime Green Dye above a vanilla Grass Block.

Snow Grass
Snow Grass is the snow covered grass that appeared in the game before snow-covers were introduced and changed the way snow works. With the new way that snow works, you can't put stuff on top of the snow without either making it a full snow block or without just putting it on the grass. There's no new way to put stuff on snowy grass. It's great for functionality, but, for me at least, I don't think it looks as good, so I've re-introduced the old snow grass. This way you can have large areas of snow without needing snow covers or snow blocks.

Snow Grass - Crafting
There is a crafting recipe for the Snow Grass, should you want to use it in Survival. It's simply a Snow Cover Block above a vanilla Grass Block.

Known Bugs and Problems
Just as a note, because of the way that vanilla flowers and saplings work, there's currently no way to make flowers and saplings grow on the grass and snow. However, at some point in the future I will be adding some grass and flowers specific for these blocks.