I love heavy reds - shiraz, cab sav - and I don't have stained teeth. If you aren't a red drinker then I would suggest maybe not hitting the big heavy reds straight up but starting with a nice light Pinot Noir - Squealing Pig do a nice light drinkable pinot and anything from around the Swan Bay area is generally good too. For something really really nice a St Huberts is one of my favourites in the Yarra Valley area.