Question about the navigation bar

Hello,

I've got a question regarding the navigation bar.
When you press a link in the navigation bar I'd like it to turn orange,
so visitors can see which page they're viewing right now.
So for example, if a user clicks Contact in the nav bar it turns orange,
but when they click another link like Paintings the Contact link returns to it's original color,
and the link to paintings becomes Orange.

What's the best way to do this?
I'm using the Friendselectric theme.

Greetings,
JP