In 2013, several MV-22s received communications and seating modifications to support the Marine One presidential transport squadron, replacing CH-53Es.
All-green MV-22Bs are used for support staff and other dignitaries, they are not normally used for the President due to the damage the downwash and engine exhausts would do to the landscaping of the White House (and other locations).
Any regularly assigned Marine Presidential aircraft will have a white upper fuselage ("white-top").