ISTWCMS-6892: Darken the local site footer for accessibility

src/patterns/01-core/props/_colors.scss

@@ -44,7 +44,7 @@
   --mat-primary: var(--mat-4);
   --neutral-1: #dfdfdf;
   --neutral-2: #a2a2a2;
-  --neutral-3: #787878;
+  --neutral-3: #767676;
   --neutral-4: #000;
   --neutral-primary: #fafafa;
   --sci-1: #b9cdfb;
@@ -83,7 +83,7 @@
   --uw-black: #000;
   --uw-black-1: #dfdfdf;
   --uw-black-2: #a2a2a2;
-  --uw-black-3: #787878; //local  site footer color
+  --uw-black-3: #767676; //Local site footer color for accessibility.
   --uw-black-4: #000;
   --uw-black-primary: #000;
   --uw-gold: #fdd54f;