[Windows Central Question]

I just recently switched from a Nokia Lumia 920 due to age and it was dead to a Nokia Lumia 635.

Previously on my past 920, I could set the background from light -> dark in the start + theme settings and it would work for my Linked Inbox to be that light/or dark.

Now, with switching to the Nokia Lumia 635 it is not changing to the dark background I would prefer, only remains in the light, in the Linked Inbox as it had in the past. It is something I can look over, but, it is bothering me as to why it is not working properly? Is it a bug in the programming? Is there something I may be missing on getting that dark background for the Linked Inbox?

Help!