Good job picking them grey PAs. Don't wear them until you dye them - it will make it easier due to not having any creasing. First use de glazer / ace tone rubbing the polish once the grey colour stripped use a spray to dye the shoe. Now you will havers make 2 coats on 2-3hours difference. I have a pictorial on this colour change . Try finding using search. Navy PA are the best and most versatile !