Why is my iphone not being as transparernt as others?

Like when you open a window and you can kinda see the back layer, mine is less. My control center is white while I see peoples whose is there background color. Is there a setting for transparency? I want my phone to be have more transparernt layers!

You have an iPhone 4 or an iPod Touch 4th Gen.
They did this because the iPhone 4 does not have the same amount of power that the iPhone4S and up have.
In order for the iPhone 4 to run as smooth as possible. They have to remove some aesthetic features like the translucent CC or translucent folder background

You can't change it unless you get a new iPhone.