CSS Help – Make Active link color "match" with Hover in Product theme.

I have an itty-bitty CSS question. I’m working on this site: http://theleapacademy.org

And I’ve been able to make most things behave. I set the Navigation text and hover colors easily through Custom Styling. There is no option for “Active” so when you select a page, it’s White on White (no bueno!) – how can I set the active link to follow the hover property?