Not really. I mean technically yes, now here comes the but.
The app’s action bar comes with the standard nextcloud blue. Looking at the material design guidelines, your action bar is your color baseline as in the so called 500-value while your system/notification bar shall ship with the 700-value equivalent. So one should not color both bars in the same color but the mentioned two different shapes.
As for the logo, I leave that to @jan since he is the design guru and the way it is now simply follows the server side where there is also no name but just the logo.
Sorry for the no’s, I leave it up to the designers though but at least for the system bar coloring would advise against a change very strongly.