How can I extract the Mail and Messages icons for iPhone 6 Plus?

Where can I find or how can I extract the Mail and Messages icons, both 140x140 in size, that are displayed on iPhone 6 Plus.

If you have the device, you can find them in /Applications/MobileMail.app and /Applications/MobileSMS.app respectively. For jailbroken users, use iFile, Filza or i-FunBox.

By the way, these icons are so I can do my WinterBoard theme.