AST is changing the color of custom php code

hi,

I have the below code in my function.php file. It displays “Charges on your statement will appear as XYZ.com” in the order emails. This code worked fine prior to installing AST and appeared in red color. However, in AST the email templete changes the color to the default color. I dont want AST to change this red color. I am ok with the blue overall but need the below code to still appear in red.

add_action( 'woocommerce_email_before_order_table', 'bbloomer_add_content_specific_email', 20, 4 );
  
function bbloomer_add_content_specific_email( $order, $sent_to_admin, $plain_text, $email ) {
   if ( $email->id == 'customer_processing_order' or 'customer_completed_order' ) {
      echo '<h2 class="email-upsell-title"><span style="color: rgb(255, 0, 0);">Charges on your statement will appear as &quot;<strong>XYZ.com</strong>&quot;</span></h2><p class="email-upsell-p"></p>';
   }
}

how do i stop it from changing the color on above code?

thanks