That can be done with Minecraft commands. Instead, this texture pack spreads the grass texture to the sides of blocks ... and The End, as well as the overworld at night time.

Simple Minecraft Trick to Make Halfslab Sand You Can Crawl Through | No Command Blocks / Modsthanks for leaving a like :D | ...

Ender pearls are among the few items needed to beat Minecraft. Players will need them to make the eyes of ender necessary for activating the end portal ... eight blocks. Place a soul sand ...