Pinned Navigation help????

[DoobieCreative]

I am currently working on a single page website.  The navigation is pinned to the very top of the page.  Each anchored section has a different color background. How can I switch the color of navigation items when scrolling to a different anchored section while still pinned to to the top of page?

A LITTLE MORE ON THIS SITUATION...

1. I have 3 sections (anchors) in my one page design, all with different background colors (grey, blue, and white). 

2. My navigation is white.

3. How do I change the color of navigation links from white to black, while viewing the white section of the page?

Thanks in advance to anyone who can be of assistance...

[Günter Heißenbüttel · Accepted solution]

By assigning the color to the active state of the element (manual menu, rectangle, …), which triggers the scrolling to the anchor.

Attention: The active state of the triggering element is shown, when the anchor reaches the top edge of the browser window.