Added out own textures for the spellbook and added a second variant

src/main/java/com/minelittlepony/unicopia/entity/EntitySpellbook.java

@@ -25,12 +25,17 @@ import net.minecraft.world.World;
 public class EntitySpellbook extends EntityLiving implements IMagicals {
 
     private static final DataParameter<Boolean> OPENED = EntityDataManager.createKey(EntitySpellbook.class, DataSerializers.BOOLEAN);
+    private static final DataParameter<Boolean> ALTERED = EntityDataManager.createKey(EntitySpellbook.class, DataSerializers.BOOLEAN);
     private static final DataParameter<Byte> OPENED_USER = EntityDataManager.createKey(EntitySpellbook.class, DataSerializers.BYTE);
 
     public EntitySpellbook(World worldIn) {
         super(worldIn);
         setSize(0.6f, 0.6f);
         enablePersistence();
+
+        if (world.rand.nextInt(3) == 0) {
+            setAltered();
+        }
     }
 
     @Override
@@ -38,6 +43,7 @@ public class EntitySpellbook extends EntityLiving implements IMagicals {
         super.entityInit();
         dataManager.register(OPENED, true);
         dataManager.register(OPENED_USER, (byte)1);
+        dataManager.register(ALTERED, false);
     }
 
     @Override
@@ -55,6 +61,14 @@ public class EntitySpellbook extends EntityLiving implements IMagicals {
         return false;
     }
 
+    public boolean getIsAltered() {
+        return dataManager.get(ALTERED);
+    }
+
+    public void setAltered() {
+        dataManager.set(ALTERED, true);
+    }
+
     public boolean getIsOpen() {
         return dataManager.get(OPENED);
     }

src/main/java/com/minelittlepony/unicopia/render/RenderSpellbook.java

@@ -11,7 +11,8 @@ import net.minecraft.util.ResourceLocation;
 
 public class RenderSpellbook extends RenderLiving<EntitySpellbook> {
 
-    private static final ResourceLocation texture = new ResourceLocation("textures/entity/enchanting_table_book.png");
+    private static final ResourceLocation BLUE = new ResourceLocation("unicopia", "textures/entity/enchanting_table_book_blue.png");
+    private static final ResourceLocation NORMAL = new ResourceLocation("unicopia", "textures/entity/enchanting_table_book.png");
 
     public RenderSpellbook(RenderManager rendermanagerIn) {
         super(rendermanagerIn, new ModelSpellbook(), 0);
@@ -19,7 +20,7 @@ public class RenderSpellbook extends RenderLiving<EntitySpellbook> {
 
     @Override
     protected ResourceLocation getEntityTexture(EntitySpellbook entity) {
-        return texture;
+        return entity.getIsAltered() ? BLUE : NORMAL;
     }
 
     @Override