Cubecore Archer Suggestion

package Archer;

import org.bukkit.Bukkit;
import org.bukkit.Material;
import org.bukkit.entity.Arrow;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.EntityDamageByEntityEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.LeatherArmorMeta;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.potion.PotionEffect;
import org.bukkit.potion.PotionEffectType;


public class Main extends JavaPlugin implements Listener {
    public void onEnable() {
        Bukkit.getPluginManager().registerEvents(this, this);
    }

    @SuppressWarnings("deprecation")
    @EventHandler
    public void onEntityDamage(EntityDamageByEntityEvent event) {
        if (event.getEntity() instanceof Player && event.getDamager() instanceof Arrow) {
            Arrow arrow = (Arrow) event.getDamager();   //Might want to check if class is active etc
            if (arrow.getShooter() instanceof Player) {
                Player shooter = (Player) arrow.getShooter();
                Player player = (Player) event.getEntity();
                ItemStack helmet = shooter.getInventory().getHelmet();
                ItemStack chestplate = shooter.getInventory().getChestplate();
                ItemStack leggings = shooter.getInventory().getLeggings();
                ItemStack boots = shooter.getInventory().getBoots();

                if (helmet.getType().equals(Material.LEATHER_HELMET) && chestplate.getType().equals(Material.LEATHER_CHESTPLATE) && leggings.getType().equals(Material.LEATHER_LEGGINGS) && boots.getType().equals(Material.LEATHER_BOOTS)) {
                    LeatherArmorMeta leatherHelmet = (LeatherArmorMeta) helmet.getItemMeta();
                    LeatherArmorMeta leatherChestplate = (LeatherArmorMeta) chestplate.getItemMeta();
                    LeatherArmorMeta leatherLeggings = (LeatherArmorMeta) leggings.getItemMeta();
                    LeatherArmorMeta leatherBoots = (LeatherArmorMeta) boots.getItemMeta();
                    //Wither black
                    String color = "Color:[rgb0x191919]";
                    if(leatherHelmet.getColor().toString().equals(color) && leatherChestplate.getColor().toString().equals(color) && leatherLeggings.getColor().toString().equals(color) && leatherBoots.getColor().toString().equals(color))
                    {
                        player.addPotionEffect(new PotionEffect(PotionEffectType.WITHER, 100, 1));
                    }
                    //Slowness light blue
                    color = "Color:[rgb0x6699D8]";
                    if(leatherHelmet.getColor().toString().equals(color) && leatherChestplate.getColor().toString().equals(color) && leatherLeggings.getColor().toString().equals(color) && leatherBoots.getColor().toString().equals(color))
                    {
                        player.addPotionEffect(new PotionEffect(PotionEffectType.SLOW, 400, 0));
                    }
                    //Poison green
                    color = "Color:[rgb0x667F33]";
                    if(leatherHelmet.getColor().toString().equals(color) && leatherChestplate.getColor().toString().equals(color) && leatherLeggings.getColor().toString().equals(color) && leatherBoots.getColor().toString().equals(color))
                    {
                        player.addPotionEffect(new PotionEffect(PotionEffectType.POISON, 400, 0));
                    }
                    //Flame red
                    color = "Color:[rgb0x993333]";
                    if(leatherHelmet.getColor().toString().equals(color) && leatherChestplate.getColor().toString().equals(color) && leatherLeggings.getColor().toString().equals(color) && leatherBoots.getColor().toString().equals(color))
                    {
                        player.setFireTicks(200);
                    }
                    //Lightning yellow
                    color = "Color:[rgb0xE5E533]";
                    if(leatherHelmet.getColor().toString().equals(color) && leatherChestplate.getColor().toString().equals(color) && leatherLeggings.getColor().toString().equals(color) && leatherBoots.getColor().toString().equals(color))
                    {
                        player.getWorld().strikeLightning(player.getLocation());   //Really op so id say add a cooldown to it and make it so that your bow has to be fully pulle back for it to work.
                    }
                }
            }
        }
    }
}