Roadworks by WThieves, The Minecraft Community
Giving minecraft some detail by creating more realistic streets!
HexWool by Nauja
This mod adds a new block and allows you to give it a custom color. Default texture of the block is a normal wool so it doesn't affect colors applied to it.
Diet Hopper by RWTema
Slims down the bounding box of hoppers to allow you to select objects behind it.