Z5 on-screen button

Hi all. My z5 arrived today and I find that the on screen buttons obstruct my YouTube video in full screen horizontal mode. They block a good portion too. Is there a way around this issue?

Other than that, I really like this phone, especially its camera. Oneplus 1 camera suck so bad

Sent from my E6653 using Tapatalk

Problem with applying theme after enabling On-Screen keyboard

I cannot apply another theme than the default samsung theme after enabling On-Screen keyboard. I want the look and feel of the new Nexus that is why i enabled the on-screen keys and use third party launcher to theme and use stock lollipop icons.

I want to use the "Material Design" Theme but another problem would be the keyboard being themed. I only want the stock apps being themed by it. I hope someone interested with theming would be able to help me. Thank you in advance.