Varia: Update config comments

varia/sass/abstracts/_config-global.scss

@@ -61,9 +61,9 @@ $config-global: (
 		),
 		"foreground": (
 			"default": #444444,
-			"light": #767676, // must be accesible!
-			"dark": #111111, // must be accesible!
-			"lighter": #FAFAFA,
+			"light": #767676, // must be accessible against background
+			"dark": #111111, // must be accessible against background
+			"lighter": #FAFAFA, // must be accessible against foreground-default
 		),
 		"background": white,
 		"border": (

varia/sass/child-theme/_config-child-theme-deep.scss

@@ -70,9 +70,9 @@ $config-global: (
 		),
 		"foreground": (
 			"default": #444444,
-			"light": #767676, // must be accesible!
-			"dark": #111111, // must be accesible!
-			"lighter": #FAFAFA,
+			"light": #767676, // must be accessible against background
+			"dark": #111111, // must be accessible against background
+			"lighter": #FAFAFA, // must be accessible against foreground-default
 		),
 		"background": white,
 		"border": (