Requesting Malangdo Hat (18537) costume

Suggestions
1

Imported from legacy Flarum.
Original author: Rakugaki (Flarum #351)

There’s a red Malangdo Hat. Then there’s this yellow one. Please make it obtainable and costume-eizable. Thank you~

2

Imported from legacy Flarum.
Original author: GM_Icecold (Flarum #3)

Hello, can you tell me the itemID of the red version please?