A couple of weeks ago I got my braces off. Now, my teeth have never been that barbie beautiful white color. But they also have never been really yellow. Although I decidedto try cwhite strips at home tonight to make them whiter. After about 25 minutes I took them off an my teeth were pretty much the same color AND the stains that were hardley visible before are now extremely white! Yuck! What do I do? Keep whitening?!?