Huh, so I posted my code before seeing/reading through the rest of this thread. Your mockups look really good! I like how you stick with the system style but still improve gradients, text size and alignment and button styles, which is *a lot* more than I've done. I've basically done a lot of work to get the navbar to blend in with the rest of the custom layout and so it resizes properly on mobile, but not too much else.