An unconfirmed leak suggests that the iPhone 8 will feature a reflective finish as one of its color options. A trio of standard colors will also be available, but it is unknown which colors they are.
https://www.notebookcheck.net/Your-next-iPhone-might-have-a-mirror-like-finish.232852.0.html
With such a price colors should be at least: mirror one, blackest black, gold, pink gold.