Update .cocoadocs.yml

.cocoadocs.yml

@@ -1,6 +1,6 @@
 highlight-color: "#F89915"
 highlight-dark-color: "#E23B1B"
-darker-color: "#FFF1DE"
+darker-color: "#D8A688"
 darker-dark-color: "#E93D1C"
 background-color: "#E9DFDB"
 alt-link-color: "#E23B1B"