UI: fix color for navigations items

Change-Id: If9799e044e7123e50a81543d2adce417192b776a

Ring/Ring/Features/Conversations/ComposeNewMessageCoordinator.swift

@@ -59,6 +59,7 @@ class ComposeNewMessageCoordinator: Coordinator, StateableResponsive, Conversati
             })
             .disposed(by: self.disposeBag)
         self.callbackPlaceCall()
+        self.navigationController.navigationBar.tintColor = UIColor.jamiButtonDark
     }
 
     func start() {

Ring/Ring/Features/Conversations/ConversationsCoordinator.swift

@@ -113,6 +113,7 @@ class ConversationsCoordinator: RootCoordinator, StateableResponsive, Conversati
             })
             .disposed(by: self.disposeBag)
         self.callbackPlaceCall()
+        self.navigationController.navigationBar.tintColor = UIColor.jamiButtonDark
     }
 
     func start() {