Customize the ACF color picker in your theme

scripts.php

// add brand color palette to acf color picker
function kronos_acf_input_admin_footer() {
?><script type="text/javascript">
(function($) {
    acf.add_filter('color_picker_args', function( args, $field ){
        args.palettes = ["#000000","#CCCCCC","#EEEEEE","#FFFFFF","#b9ad33","#4c92af","#79c0a6"]
        return args;
    });
})(jQuery);
</script>
<?php }
add_action('acf/input/admin_footer', 'kronos_acf_input_admin_footer');