Change background to white

[golazocases]

Hello, I would like to change the background colour of the search results page to white or to colour scheme 2.

I would like this change to happen without effecting anything else on the store. 

Also I would like the search bar and dropdown (see attached) to also have a white background / colour scheme 2.

Again I would like this to be made without effecting anything elsewhere on the store.

See attached for reference.

URL: golazocasesuk.myshopify.com

[golazocases]

@EBOOST could I have some help with this?