Why do I say this, well there is a design flaw in iOS 8 that breaks the most basic rule of the Apple human interface guidelines. Even in iOS 8.02 it has not been spotted. Not that it should ever have got to this point. If Apple were a person it would be a precursor to dementia, it is so tiny, so easy to fix and worst of all so frikken obvious that it's as if the whole software engineering department are shellshocked. Have a look at the start button on the Clock > timer. It's is as obvious as it is possible to be that thin bright green lettering on a grey background that is perfectly matched in tonal value to the green, meaning if you converted into b/w you would see no difference, is a combination that is often used in optical illusions. Here's an example below. So it's not only almost impossible to read because there is not contrast, but there is a complementary pink shimmering with the green. Don't they usually just do a green button in this instance rather than mid grey with green lettering? How, how in the flipping hell could it be possible that someone just doesn't say, 'er... that's illegible'. Notice that the grey background and green running dot are the same grey and green on the start button. Stare at the black cross and be amazed.