Solved Problem with getting colored wool in to a GUI

Hi!

I was going to make a GUI for my Plugin. When making the GUI, I ran into the problem that I can't seem to figure out how to change the color of the Wool. I tried some different things that I found on the forums but they didn't seem to work for me (The byte things, DyeColor.. ).

I would be really happy if anyone that know how to do this could tell me how!

Code (Text):

package net.styxnetwork.colornamegui.commands;

import org.bukkit.Bukkit;
import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.ItemMeta;
import net.md_5.bungee.api.ChatColor;

public class color implements CommandExecutor {
    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
        if (label.equalsIgnoreCase("color")) {
            if (!(sender instanceof Player)) {
                sender.sendMessage(ChatColor.RED + "Bara spelare kan använda detta kommando.");
                return false;
            }
            Player p = (Player) sender;
            Inventory inv = Bukkit.createInventory(null, 18, ChatColor.AQUA + "Färg Byte - STyX Network");
            ItemStack lightgraywool = wool(Material.WOOL, (byte)1, ChatColor.GRAY + "Ljus grå färg");
            ItemStack graywool = wool(Material.WOOL, (byte)2, ChatColor.DARK_GRAY + "Grå färg");
            ItemStack pinkwool = wool(Material.WOOL, (byte)3, ChatColor.RED + "Rosa Ull");
            inv.setItem(0, lightgraywool);
            inv.setItem(1, graywool);
            inv.setItem(2, pinkwool);
            p.openInventory(inv);
            return true;
        }
        return false;
    }
    private ItemStack wool(ItemStack item, String name) {
        ItemMeta meta = item.getItemMeta();
        meta.setDisplayName(name);
        item.setItemMeta(meta);
        return item;
    }
    private ItemStack wool(Material item, byte b, String name) {
        return wool(new ItemStack(item), name);
    }
}