After I installed Windows 10 clean on my new laptop G751JY

The theme colors are like old style windows 3.1 brown/grey color. no white etc.
Tried different themes, but no luck.

https://www.dropbox.com/s/rvtui6rybcr1sg1/color%202.PNG?dl=0

Is there a setting that i am missing ?

Also noticed when I install programs, it tells me that the username is Windows User. While I am logged in with my name and an Admin as well.