It looks like ACF's API allows us to change the default choices in color pickers. For more info read here: https://www.advancedcustomfields.com/resources/adding-custom-javascript-fields/ and here (the last comment): https://support.advancedcustomfields.com/forums/topic/customise-color-picker-swatches/

The below should more or less work if you paste it into functions.php, but please give it a good look Rohan . You can find the theme colors at the top of _child_theme_variables_scss.

function my_acf_input_admin_footer() {
    
?>
<script type="text/javascript">
(function($) {
    
    acf.add_filter('color_picker_args', function( args, $field ){
  
  // do something to args
  args.palettes = ['#5ee8bf', '#2f353e', '#f55e4f']
  
  
  // return
  return args;
      
});
    
})(jQuery); 
</script>
<?php
        
}

add_action('acf/input/admin_footer', 'my_acf_input_admin_footer');