HTML

<hexchess-board board="start">
  <img
    slot="piece-white-king"
    src="https://raw.githubusercontent.com/clarkerubber/Staunton-Pieces/master/Trophies/Big-Gold-Cup.png"
    alt="White king trophy"
  />
</hexchess-board>

Add <img> tags for any other slot (piece-white-queen, piece-black-pawn, etc.) to override more pieces. Every surface of the component (canvas, captured pieces, promotions) swaps to the provided art automatically.