Coloured Armor

public function GivePlayerItems(Player $player){
$player->getInventory()->clearAll();
$i1 = new Item(Item::WOOD_SWORD, 0, 1);
$i2 = new Item(Item::GOLDEN_APPLE, 0, 1);
$i3 = new Item(Item::BOW, 0, 1);
$i4 = new Item(Item::ARROW, 0, 20);
$i5 = new Item(Item::STICK, 0, 1);
$player->getInventory()->setItem(1, $i1);
$player->getInventory()->setItem(2, $i2);
$player->getInventory()->setItem(3, $i3);
$player->getInventory()->setItem(4, $i4);
$player->getInventory()->setItem(5, $i5);
$player->getInventory()->setHelmet(new Item(Item::IRON_HELMET, 0, 1));
$player->getInventory()->setBoots(new Item(Item::IRON_BOOTS, 0, 1));
$player->getInventory()->setChestplate(new Item(Item::IRON_CHESTPLATE, 0, 1));
$player->getInventory()->setLeggings(new Item(Item::IRON_LEGGINGS, 0, 1));
}

can anyone make me a code that do violet leather armor with this method? instead of IRON_LEGGINGS and etc