Font Face Observer Can't Handle Fonts With Colons (:) In Their Family Name

[jwbats]

Google Fonts currently offers 6 fonts that have colons (:) in the family parameters of their @font-face links.

https://fonts.googleapis.com/css?family=Buda:300
https://fonts.googleapis.com/css?family=Coda+Caption:800
https://fonts.googleapis.com/css?family=Molle:400i
https://fonts.googleapis.com/css?family=Open+Sans+Condensed:300
https://fonts.googleapis.com/css?family=Sunflower:300
https://fonts.googleapis.com/css?family=UnifrakturCook:700

Inspecting the network activity using Chrome's dev console, shows that the @font-face declarations are properly loaded, but Font Face Observer makes no attempt at downloading the font binary.

[nuthinking]

Haven't use FFO yet, but I assume it doesn't download anything. It just observes when the fonts declared by the CSS are loaded, doesn't it?