I have been to many weddings that have had candy buffets and they have always been a huge hit. If there are guests that are diabetic, they are grown up enough to know better than to eat something that will do them harm.
I do agree that limiting yourself to black and white does limit your options but it can be done. I had a bride choose only cream for her candy buffet. It looked beautiful!
is a great site to help you find candy per color, flavor, wrapped an unwrapped.
Have fun with your wedding planning. Your wedding will be a reflection of you and your fiance. If you have fun with your wedding planning, it will show on you wedding day and you will be happy you did.
How about Oreo Cookes!!!!! It doesn't just have to be candy.