Snapshot 13w09a, Snapshot 13w09b, Snapshot 13w09c, Snapshot 13w10a, Snapshot 13w10b, Minecraft 1.5, Snapshot 13w11a, Minecraft 1.5.1, Snapshot 13w16a, Snapshot 13w16b, Minecraft 1.5.2, Snapshot 13w17a, Minecraft 1.6.2, Minecraft 1.7.4, Minecraft 14w05b, Minecraft 14w06b, Minecraft 14w07a
Hoppers become darker on their bottom part whilst being broken.
Steps to Reproduce:
1. Make a new Creative world.
2. Give yourself a stack of Hoppers and a Wooden Pickaxe.
3. Switch your gamemode to Survival, place a Hopper, and begin to break it.
4. Notice the dark texture on the bottom of the Hopper. This can also be seen on the inside of the Hopper if you are standing at the same height as it.