What you’ll need
Nail polish remover or leather deglazer
Use nail polish remover (with acetone) and a cotton pad to remove any finishes on the shoes.
Choose a much darker color, as lighter colors will show streaks and blotches.
Once the shoes dry, coat dye on the leather. Don’t let it drip too much. First coat looks streaky.
Don’t forget to do both shoes!
Let the first coat of dye dry, and then do a second coat. For a darker appearance, do a 3rd.
Go into hard-to-reach spots with a q-tip.
Once the dye has dried, take a soft cloth and rub/buff the shoes with shoe wax.