iOS 7 Keyboard theme switching

Question

Is there a way to build an app to switch between the light and dark keyboards in iOS 7 on the fly, in-app?

Example: I'd like to make a writing app that can switch between 'Dark' and 'Light' themes. The keyboard should be the default white/light grey appearance for the Light theme, and the black/dark grey scheme for the Dark theme. The two different themes can be simply toggled via an in-app option.

Possible?

(Please forgive me if this is a stupid/super-obvious question. I'm not a programmer, but I want to hire one to build my ideas for iOS apps. I just want to be sure I'm making requests that are actually possible, and could not find an answer to my specific question via the search here or google. Thanks!)

Answer 1

Just use this:

[textField setKeyboardAppearance:UIKeyboardAppearanceDark]; //Alert/Default/Dark/Light
[textField reloadInputViews];