How to charge background collor of Settings app?

I want to know how to change the background color of my settings app to white and gray (for bar) but I found no files to change it. can help?
This is my settings app:



I want to leave it like this:
http://ift.tt/1TnnjMy

you can help me?

This is my app of settings if you want to modify it for me
http://ift.tt/1NXo1Ur

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