How to change content backround color on a individual page?

Hi!

I`ve installed and activated Woocommerce Plugin.

I would like Woocommerce shop page to be different color than other pages. So, how can I change content page color on individual page?

I`ve installed and activated Simple CSS Plugin. From Dashboard I opened Customize tab and then Simple CSS. That opened the Simple CSS box for that individual page. But code:

body {background-color: fffff;}

did not change anything.

What went wrong? How to change the color of that individual page.

Thanks!

- Lasse