You have a lot of mods in Minecraft 1.7.2? Already know not to mod belong each block or object?
Waila Mod 1.7.2 and 1.7.10 handles stay informed at all times on any object, item or block added by a mod, so you always know that mod is. The mod handles this by adding a small square in the game screen.

Detail and Download here : Waila Mod

Homepage: Mods for Minecraft