Add the colors that are on WP theme.json on ACF Color pick

functions.php

<?php
add_action('acf/input/admin_footer', function() {
    $themeJsonFile = get_stylesheet_directory() . '/theme.json';
    if(file_exists($themeJsonFile)) {
        $themeJson = json_decode(file_get_contents($themeJsonFile));
        $colorsArray = [];
        $colorsJson = '';

        foreach($themeJson->settings->color->palette as $color) {
            $colorsArray[] = $color->color;
        }
        $colorsJson = json_encode($colorsArray);

        echo "
            <script>
                if(typeof acf !== 'undefined' && acf?.add_filter !== undefined) {
                    acf.add_filter('color_picker_args', function(args){
                        args.palettes = {$colorsJson};
                        return args;
                    });
                }
            </script>
        ";
    }
});