Is it possible to add a background colour to the search page?

Hi there, 

Is it possible to add a background colour/image to the search page?  I'm using Brine and my search  page is completely white, which has made my white logo vanish, and in mobile view, the white navigation has completely disappeared as well, leaving a blank looking white space above the search bar.  I'm also using transparent headers throughout the site which is probably why this problem has occurred.

I've had a trawl through the forum, but couldn't find anything which relates to this specifically.  Any tips would be very gratefully received!

Many thanks, 

Sophie

Can you share link to search page? We can check easier