So I had just noticed something(im kind-of slow) but the cobblestone texture just got changed! and it looked worse than the other one (opinion).

SOOO i took the initiative and found the original x16 cobblestone texture and put it in the terrain.png, and that's all i changed. and just saying, i found it off google so it's not my texture..

TO INSTALL

1. Open the downloaded file
   
2. There should only be one (terrain)
   
3. Open folder: %appdata%
   
4. Click on the folder '.minecraft' (the " . " is intentional)
   
5. Click the 'bin' folder
   
6. Open 'Minecraft.jar' with winRar archiver/7-zip
   
7. Drag the 'terrain' from my folder into the minecraft.jar
   
8. Open minecraft and that is your new default texture pack! :)
   

BIG emphasis on DEFAULT