colors: colorizes the link on hover

* Disables the changing of the font weight on hover, as it is a bad
  idea.

Co-Authored-by: iGor milhit <igor@milhit.ch>

assets/scss/_colors.scss

@@ -21,6 +21,12 @@ a:focus,
   color: $frost-lighter-green;
 }
 
+a:hover,
+.main-header a:hover,
+.main-footer a:hover {
+  color: $aurora-purple;
+}
+
 a:visited {
   color: $frost-grey-blue;
 }

assets/scss/_texts.scss

@@ -22,8 +22,3 @@
     text-decoration: none;
   }
 }
-
-a:hover,
-.main-header a:hover {
-  font-weight: bold;
-}