1991 suburban 350 TBI no start

If in fact I do get a spark though it orange in color does that prove that the ignition control module is good? A little background here, she was running in park idling strong and stop running cold dead. Not a fart not a hiccup not a wine not a wheeze nothing just dead! I’m questioning the control module At $40 a pop they’re getting expensive. No one test them anymore, if you know how please advise.