This has been sitting on my GitHub for a while. I figured it could be released officially.
As a player that usually uses Fast graphics in Minecraft, the only real annoyance I had was the ugly grass sides. This tiny mod forces the sides of Grass Blocks to look like they do on Fancy graphics, even if the game is set to use Fast graphics.
In 1.8, this change was put in vanilla Minecraft. This mod is for the many people that still play on 1.7.10, including me.
No, I won't use OptiFine for that. And before you ask: yes, you can use this in your pack.