Better tints for source inside drawer + lighter footer credits

src/assets/stylesheets/application.palette.scss

@@ -102,6 +102,30 @@ button[data-md-color-accent] {
       background-color: $color;
     }
 
+    // Current or hovered link
+    .md-nav__link:active,
+    .md-nav__link--active {
+      color: $color;
+    }
+
+    // [tablet portrait -]: Layered navigation
+    @include break-to-device(tablet portrait) {
+
+      // Repository containing source
+      .md-nav__source {
+        background-color: mix($color, $md-color-black, 75%);
+      }
+    }
+
+    // [tablet -]: Layered navigation
+    @include break-to-device(tablet) {
+
+      // Site title in main navigation
+      html & .md-nav--primary .md-nav__title--site {
+        background-color: $color;
+      }
+    }
+
     // [tablet landscape +]: Add border to table of contents
     @include break-from-device(tablet landscape) {
 
@@ -110,12 +134,6 @@ button[data-md-color-accent] {
         border-left: 0.4rem solid $color;
       }
     }
-
-    // Current or hovered link
-    .md-nav__link:active,
-    .md-nav__link--active {
-      color: $color;
-    }
   }
 }
 

src/assets/stylesheets/layout/_footer.scss

@@ -122,7 +122,7 @@
 
   // Use a decent color for non-hovered links and ensure specificity
   html &.md-typeset a {
-    color: $md-color-white--lighter;
+    color: $md-color-white--light;
   }
 }
 
@@ -130,7 +130,7 @@
 .md-footer-copyright {
   margin: 0 1.2rem;
   padding: 0.8rem 0;
-  color: $md-color-white--lightest;
+  color: $md-color-white--lighter;
   font-size: ms(-1);
 
   // [tablet portrait +]: Show next to social media links

src/assets/stylesheets/layout/_nav.scss

@@ -363,7 +363,7 @@
     &__source {
       display: block;
       padding: 0.4rem;
-      background-color: darken($md-color-primary, 10%);
+      background-color: mix($md-color-primary, $md-color-black, 75%);
       color: $md-color-white;
     }
   }