The payment is blue every time I get the mail for me. Its been like this for years for me. When I get the mail I know that MIB is less 24 hours away
Even after I get the payment issued email, I still don't have it til the next day. But that is always encouraging to get the email.
It a just depends on the bank really. I bank with chase and usually get it by 6 am so this was much earlier than normal