diff --git a/src/main/java/net/Indyuce/mmoitems/stat/Gem_Sockets.java b/src/main/java/net/Indyuce/mmoitems/stat/Gem_Sockets.java
index 93b6f007..50d64b46 100644
--- a/src/main/java/net/Indyuce/mmoitems/stat/Gem_Sockets.java
+++ b/src/main/java/net/Indyuce/mmoitems/stat/Gem_Sockets.java
@@ -25,7 +25,6 @@ import net.Indyuce.mmoitems.api.util.AltChar;
 import net.Indyuce.mmoitems.gui.edition.EditionInventory;
 import net.Indyuce.mmoitems.stat.data.GemSocketsData;
 import net.Indyuce.mmoitems.stat.data.StatData;
-import net.Indyuce.mmoitems.stat.data.StringListData;
 import net.Indyuce.mmoitems.stat.type.ItemStat;
 import net.mmogroup.mmolib.api.item.ItemTag;
 import net.mmogroup.mmolib.api.item.NBTItem;
@@ -37,7 +36,7 @@ public class Gem_Sockets extends ItemStat {
 
 	@Override
 	public void whenLoaded(MMOItem item, ConfigurationSection config) {
-		item.setData(this, new GemSocketsData(new StringListData(config.getStringList("gem-sockets"))));
+		item.setData(this, new GemSocketsData(config.getStringList("gem-sockets")));
 	}
 
 	@Override
diff --git a/src/main/java/net/Indyuce/mmoitems/stat/data/ColorData.java b/src/main/java/net/Indyuce/mmoitems/stat/data/ColorData.java
index c4ab16f7..575a3fe5 100644
--- a/src/main/java/net/Indyuce/mmoitems/stat/data/ColorData.java
+++ b/src/main/java/net/Indyuce/mmoitems/stat/data/ColorData.java
@@ -6,11 +6,12 @@ import org.bukkit.Color;
 import net.Indyuce.mmoitems.api.item.MMOItem;
 
 public class ColorData extends StatData {
-	private int red, green, blue;
+	private final int red, green, blue;
 
 	public ColorData(MMOItem mmoitem, String string) {
 		String[] split = string.split("\\ ");
 		Validate.isTrue(split.length > 2, "Must specify 3 numbers for red, green and blue");
+
 		red = Math.min(255, Math.max(0, Integer.parseInt(split[0])));
 		green = Math.min(255, Math.max(0, Integer.parseInt(split[1])));
 		blue = Math.min(255, Math.max(0, Integer.parseInt(split[2])));
@@ -38,24 +39,6 @@ public class ColorData extends StatData {
 		return blue;
 	}
 
-	public void setRed(int value) {
-		red = value;
-	}
-
-	public void setGreen(int value) {
-		green = value;
-	}
-
-	public void setBlue(int value) {
-		blue = value;
-	}
-
-	public void setColor(Color color) {
-		red = color.getRed();
-		green = color.getGreen();
-		blue = color.getBlue();
-	}
-
 	public Color getColor() {
 		return Color.fromRGB(red, green, blue);
 	}
diff --git a/src/main/java/net/Indyuce/mmoitems/stat/data/EffectListData.java b/src/main/java/net/Indyuce/mmoitems/stat/data/EffectListData.java
index 6ac9c9f8..269f5cc0 100644
--- a/src/main/java/net/Indyuce/mmoitems/stat/data/EffectListData.java
+++ b/src/main/java/net/Indyuce/mmoitems/stat/data/EffectListData.java
@@ -4,7 +4,7 @@ import java.util.ArrayList;
 import java.util.List;
 
 public class EffectListData extends StatData implements Mergeable {
-	private List<PotionEffectData> effects = new ArrayList<>();
+	private final List<PotionEffectData> effects = new ArrayList<>();
 
 	public EffectListData(PotionEffectData... effects) {
 		add(effects);
diff --git a/src/main/java/net/Indyuce/mmoitems/stat/data/GemSocketsData.java b/src/main/java/net/Indyuce/mmoitems/stat/data/GemSocketsData.java
index 7e5b3162..7c1c8e57 100644
--- a/src/main/java/net/Indyuce/mmoitems/stat/data/GemSocketsData.java
+++ b/src/main/java/net/Indyuce/mmoitems/stat/data/GemSocketsData.java
@@ -17,28 +17,15 @@ import net.Indyuce.mmoitems.MMOUtils;
 import net.Indyuce.mmoitems.api.item.MMOItem;
 import net.Indyuce.mmoitems.stat.Abilities.AbilityListData;
 import net.Indyuce.mmoitems.stat.type.DoubleStat.DoubleData;
-import net.mmogroup.mmolib.api.item.NBTItem;
 import net.Indyuce.mmoitems.stat.type.ItemStat;
+import net.mmogroup.mmolib.api.item.NBTItem;
 
 public class GemSocketsData extends StatData {
-	private Set<GemstoneData> gems = new HashSet<>();
-	private List<String> slots;
+	private final Set<GemstoneData> gems = new HashSet<>();
+	private final List<String> emptySlots;
 
-	/*
-	 * used when the MMOItem is generated. when the item has already been
-	 * generated, the direct item slot amount isloaded.
-	 */
-	private StringListData unloadedSlots;
-	private boolean loaded;
-
-	public GemSocketsData(List<String> slots) {
-		this.slots = slots;
-		this.loaded = true;
-	}
-
-	public GemSocketsData(StringListData unloadedSlots) {
-		this.unloadedSlots = unloadedSlots;
-		this.loaded = false;
+	public GemSocketsData(List<String> emptySlots) {
+		this.emptySlots = emptySlots;
 	}
 
 	public boolean canReceive(String gem) {
@@ -46,7 +33,7 @@ public class GemSocketsData extends StatData {
 	}
 
 	public String getEmptySocket(String gem) {
-		for (String slot : slots)
+		for (String slot : emptySlots)
 			if (gem.equals("") || slot.equals(MMOItems.plugin.getConfig().getString("gem-sockets.uncolored")) || gem.equals(slot))
 				return slot;
 		return null;
@@ -57,12 +44,12 @@ public class GemSocketsData extends StatData {
 	}
 
 	public void apply(String gem, GemstoneData gemstone) {
-		slots.remove(getEmptySocket(gem));
+		emptySlots.remove(getEmptySocket(gem));
 		gems.add(gemstone);
 	}
 
 	public List<String> getEmptySlots() {
-		return loaded ? slots : unloadedSlots.getList();
+		return emptySlots;
 	}
 
 	public Set<GemstoneData> getGemstones() {
@@ -92,11 +79,11 @@ public class GemSocketsData extends StatData {
 	}
 
 	public class GemstoneData {
-		private Set<AbilityData> abilities = new HashSet<>();
-		private List<PotionEffectData> effects = new ArrayList<>();
-		private Map<ItemStat, Double> stats = new HashMap<>();
+		private final Set<AbilityData> abilities = new HashSet<>();
+		private final List<PotionEffectData> effects = new ArrayList<>();
+		private final Map<ItemStat, Double> stats = new HashMap<>();
 		// private ParticleData particle;
-		private String name;
+		private final String name;
 
 		/*
 		 * This constructor is not really performance friendly. It should only
@@ -115,9 +102,9 @@ public class GemSocketsData extends StatData {
 
 		public GemstoneData(NBTItem nbtItem, MMOItem mmoitem) {
 			if (mmoitem.hasData(ItemStat.ABILITIES))
-				abilities = ((AbilityListData) mmoitem.getData(ItemStat.ABILITIES)).getAbilities();
+				((AbilityListData) mmoitem.getData(ItemStat.ABILITIES)).getAbilities().forEach(data -> abilities.add(data));
 			if (mmoitem.hasData(ItemStat.PERM_EFFECTS))
-				effects = ((EffectListData) mmoitem.getData(ItemStat.PERM_EFFECTS)).getEffects();
+				((EffectListData) mmoitem.getData(ItemStat.PERM_EFFECTS)).getEffects().forEach(data -> effects.add(data));
 			for (ItemStat stat : MMOItems.plugin.getStats().getDoubleStats())
 				if (mmoitem.hasData(stat))
 					stats.put(stat, ((DoubleData) mmoitem.getData(stat)).getMin());
diff --git a/src/main/java/net/Indyuce/mmoitems/stat/data/ParticleData.java b/src/main/java/net/Indyuce/mmoitems/stat/data/ParticleData.java
index fbf295c0..c969b70a 100644
--- a/src/main/java/net/Indyuce/mmoitems/stat/data/ParticleData.java
+++ b/src/main/java/net/Indyuce/mmoitems/stat/data/ParticleData.java
@@ -25,7 +25,7 @@ public class ParticleData extends StatData {
 	private final Particle particle;
 	private final Map<String, Double> modifiers = new HashMap<>();
 
-	private Color color;
+	private final Color color;
 
 	public ParticleData(JsonObject object) {
 		particle = Particle.valueOf(object.get("Particle").getAsString());
@@ -33,8 +33,9 @@ public class ParticleData extends StatData {
 
 		if (object.has("Color")) {
 			JsonObject color = object.getAsJsonObject("Color");
-			setColor(color.get("Red").getAsInt(), color.get("Green").getAsInt(), color.get("Blue").getAsInt());
-		}
+			this.color = Color.fromRGB(color.get("Red").getAsInt(), color.get("Green").getAsInt(), color.get("Blue").getAsInt());
+		} else
+			color = null;
 
 		object.getAsJsonObject("Modifiers").entrySet().forEach(entry -> setModifier(entry.getKey(), entry.getValue().getAsDouble()));
 	}
@@ -48,17 +49,17 @@ public class ParticleData extends StatData {
 		format = config.getString("particle").toUpperCase().replace("-", "_").replace(" ", "_");
 		particle = Particle.valueOf(format);
 
-		for (String key : config.getKeys(false)) {
-			if (key.equalsIgnoreCase("color"))
-				setColor(config.getInt("color.red"), config.getInt("color.green"), config.getInt("color.blue"));
-			else if (!key.equalsIgnoreCase("particle") && !key.equalsIgnoreCase("type"))
+		color = config.contains("color") ? Color.fromRGB(config.getInt("color.red"), config.getInt("color.green"), config.getInt("color.blue")) : null;
+
+		for (String key : config.getKeys(false))
+			if (!key.equalsIgnoreCase("particle") && !key.equalsIgnoreCase("type") && !key.equalsIgnoreCase("color"))
 				setModifier(key, config.getDouble(key));
-		}
 	}
 
 	public ParticleData(ParticleType type, Particle particle) {
 		this.type = type;
 		this.particle = particle;
+		this.color = null;
 	}
 
 	public ParticleType getType() {
@@ -81,10 +82,6 @@ public class ParticleData extends StatData {
 		return modifiers.keySet();
 	}
 
-	public void setColor(int red, int green, int blue) {
-		color = Color.fromRGB(red, green, blue);
-	}
-
 	public void setModifier(String path, double value) {
 		modifiers.put(path, value);
 	}
diff --git a/src/main/java/net/Indyuce/mmoitems/stat/data/PotionEffectData.java b/src/main/java/net/Indyuce/mmoitems/stat/data/PotionEffectData.java
index ba2ff97f..9484c68b 100644
--- a/src/main/java/net/Indyuce/mmoitems/stat/data/PotionEffectData.java
+++ b/src/main/java/net/Indyuce/mmoitems/stat/data/PotionEffectData.java
@@ -6,7 +6,7 @@ import org.bukkit.potion.PotionEffectType;
 import net.Indyuce.mmoitems.MMOUtils;
 
 public class PotionEffectData {
-	private PotionEffect effect;
+	private final PotionEffect effect;
 
 	public PotionEffectData(PotionEffectType type, int level) {
 		effect = new PotionEffect(type, MMOUtils.getEffectDuration(type), level - 1, true, false);
diff --git a/src/main/java/net/Indyuce/mmoitems/stat/data/StringListData.java b/src/main/java/net/Indyuce/mmoitems/stat/data/StringListData.java
index 1bdfe890..2fc9e9ce 100644
--- a/src/main/java/net/Indyuce/mmoitems/stat/data/StringListData.java
+++ b/src/main/java/net/Indyuce/mmoitems/stat/data/StringListData.java
@@ -7,7 +7,7 @@ import java.util.List;
 import com.google.gson.JsonArray;
 
 public class StringListData extends StatData {
-	private List<String> list;
+	private final List<String> list;
 
 	public StringListData() {
 		this(new ArrayList<>());
@@ -19,6 +19,7 @@ public class StringListData extends StatData {
 
 	public StringListData(JsonArray array) {
 		this();
+
 		array.forEach(str -> list.add(str.getAsString()));
 	}
 
@@ -29,8 +30,4 @@ public class StringListData extends StatData {
 	public List<String> getList() {
 		return list;
 	}
-
-	public void setList(List<String> list) {
-		this.list = list;
-	}
 }