just don't invert your colours I've also reduced motion as it was making me queasy but it seems to make it worse!
Apparently upgrading to iOS7 makes your iPhone waterproof. iOS 7: users destroy iPhones after fake waterproof advert - Telegraph Warning: This link is to a Telegraph article, extreme caution should be exercised.
People's stupidity/gullibility never ceases to amaze me. Many years ago a mate was told that packing his rear drum brake with grease would stop it squeaking, which it did. The person who gave him the advice (to stop his constant moaning about the squeak) never thought he'd do it and felt so guilty he spent the next weekend stripping and cleaning the drum brake for him.