Some design type help please!?

Is there any way I can make this whole section (attached example) the same blue as my background, if so, what do I need to change in admin?

Thanks in advance


Picture 16.jpg

In styles.css line 341.

#header {

Play with the background color. If you have images in the header, their background would have to be the same or they will not change just by changing the background color unless they are transparent.