I have bought a pair of shoes that I love for my wedding. But I actually need them white–it there a way to make them lighter? They are an ivory or possible a little darker color. I did not need them bright white–just a little lighter, as my dress is white. Thank you for your time.

Hoo, I am sorry, I cannot recommend any action here. Take them to a professional shoe dyeing establishment and see what they say.
Blessed wedding,
Jennifer