https://primecomp.ind.br/produto/perfil-sp-25/ parte do form de orçamento

single-product.php

<div class="budget">
	<p>Solicite um orçamento</p>
	<form class="form-pedido" id="form-pedido-add" method="post" action="<?php echo esc_attr( site_url() ); ?>/orcamento">
		<?php wp_nonce_field( 'ac_nonce_produtos', 'nonce_produtos', true, true ); ?>
		<input type="hidden" name="type_page_verify" value="produtos" />
		<input type="hidden" name="prod" value="<?php the_ID(); ?>"/>

		<?php
		$cores = get_field( 'cores' );
		if ( $cores ) {
			?>

		<div id="cores" class="btn-group" data-toggle="buttons">

			<?php
			$i = 0;
			foreach ( $cores as $cor ) {
				$i++;
				$actived = ( reset( $cores ) === $cor ) ? ' active' : '';
				$checked = ( reset( $cores ) === $cor ) ? ' checked' : '';
			?>

			<label class="btn btn-primary<?php echo esc_attr( $actived ); ?>">
				<input type="checkbox" autocomplete="off"<?php echo esc_attr( $checked ); ?> name="color" value="color<?php echo esc_attr( $i ); ?>"> <span class="sr-only">Cor <?php echo esc_html( $i ); ?></span>
			</label>

			<?php
			}
		}
		?>

		</div>
		<button class="btn-orcamento" type="submit">adicionar ao orçamento</button>
	</form>
</div>