https://www.af.mil/News/Article-Display ... force-one/
While accounting for the VC-25B’s larger 747-8i aircraft,
the VC-25B livery has three primary differences with the VC-25A’s livery.
The light blue on VC-25B is a slightly deeper, more modern tone than VC-25A's robin's egg blue.
Additionally, the VC-25B engines will use the darker blue from the cockpit area vice the VC-25A’s robin’s egg blue.
Finally, there is no polished metal section on the VC-25B because modern commercial aircraft skin alloys don't allow for it.