Yes go with lime green shoes and a matching clutch purse. And well I don't think you should worry about the white clashing with the purple and lime green. I mean.... it's purple and lime green!!!! How much more could it possibly clash lol Hey just have a great time, you sound like a really fun couple. Edited to add: Just a though though... maybe you should go with white shoes and purse just to pull the white into your outfit a bit.