That was just for last season. Holmgren made the decision for them to wear white-on-white at home to honor Paul Brown,who enjoyed his Browns teams wearing the white-on-white because it made them seem larger. Due to the fact that most teams wear their colored sets at home, it just happened to be that they wore white-on-white every game. Most fans found it incredibly boring and hated it though, which is why they're bringing back the brown jerseys for some, if not all, home games this season.
Personally, if they're going to wear white at home, I think they should wear the orange or brown pants. Being that they're currently a very young team, the white-on-orange pants would be a cool way to honor the Kardiac Kids era.