Full drawers / controller should not pass light through.

src/com/jaquadro/minecraft/storagedrawers/block/BlockController.java

@@ -43,6 +43,7 @@ public class BlockController extends BlockContainer implements INetworked
         setHardness(5f);
         setBlockName(blockName);
         setStepSound(Block.soundTypeStone);
+        setLightOpacity(255);
         setBlockBounds(0, 0, 0, 1, 1, 1);
         setTickRandomly(true);
     }

src/com/jaquadro/minecraft/storagedrawers/block/BlockDrawers.java

@@ -109,6 +109,9 @@ public class BlockDrawers extends BlockContainer implements IExtendedBlockClickH
         setHardness(5f);
         setStepSound(Block.soundTypeWood);
         setBlockName(blockName);
+
+        if (!halfDepth)
+            setLightOpacity(255);
     }
 
     @Override