The menu can be changed in WP Admin > Appearance > Menus. You can assign custom menus to the “GM Neo Header Menu” and “GM Neo Footer Menu” locations. As for the coloring, which element are you referring to?
As for the Coaching page, this is typically caused by some kind of page caching in place. Are you using any kind of caching plugin? E.g. W3 Total Cache, WP Super Cache, etc.