Index: src/wp-content/themes/twentyseventeen/assets/css/colors-dark.css
===================================================================
--- src/wp-content/themes/twentyseventeen/assets/css/colors-dark.css	(revision 40354)
+++ src/wp-content/themes/twentyseventeen/assets/css/colors-dark.css	(working copy)
@@ -557,4 +557,8 @@
 		color: #222;
 	}
 
+	.colors-dark .wc_payment_method .payment_box{ 
+ 		background: #333; 
+ 	} 
+
 }