It seems that the apparent temperature line (pink) is in the foreground and therefore obliterates the actual temperature line (blue) in places:

It would be useful if there was a way of the user selecting which line is to be the foreground line - I'd prefer to make it the actual temperature rather than a derived temperature such as apparent, dew point or wind chill.
This affects both the view on the Graphs screen of Cumulus and the images which are displayed on a web site.