Change navbar colour to white

Change navbar colour from orange to white.

pelicanconf.py

@@ -100,7 +100,7 @@ DEFAULT_PAGINATION = 10
 RELATIVE_URLS = True
 
 PRIMARY_DARK = "#FF6600"
-PRIMARY_LIGHT = "#FF9955"
+PRIMARY_LIGHT = "#FFFFFF"
 SECONDARY_DARK = "#015ebe"
 SECONDARY_LIGHT = "#00c5fa"