Am I crazy???

Oh then your good... ya if you love the dress and you love the way it looked on you.. THEN NOOOOO YOU ARE NOOOOTTTTT CRAZY...lol

Not crazy at all!  You've tried it on and love it....that's the most important part.  Since you've seen the shape and how it fits on your body you'll be fine.  Ivory isn't hard to imagine like other colors might be.