Checkout button background color

On Customizing ? WooCommerce Menu Cart I changed the background colors of the “Checkout Button Background” hoping that this is the background color for the “Place order” button from the checkout page.
It looks like I’m wrong. Where should I change the background color of the “Place order” button from the checkout page? (I prefer to do it from settings rather than from CSS as all the other colors are set from there)
Yes, I cleared the cache, but no effect.