Can this yellow stain from dental bonding falling off be fixed? (photos)

I have recently felt less comfortable with having dental bonding & decided to go back to not having it, and just sticking to my teeth, without anything extra. One of the dental bonding fell today & I noticed a very different color of my original teeth. My teeth didn't have this color before, it's more yellowish than normal. Can this be fixed ? Or am I doomed to forever having dental bonding?