Doh - just took bottles etc out of the dishwasher and the teats have got an orange hue because they have been discoloured as also being washed was last nights tea stuff.
DD is nearly 5 months so feeding stuff will be sterilized, apart from being discoloured the teats seem perfectly O.K.
Do I need to chuck them or just have a wry smile at being a bit of a muppet?