If you check this site vocus.com/software you will find on scrolling down, the color of the icons 'Social', 'Search', 'Email', etc. etc. gets changed.
Actually when you scroll into a particular section, the corresponding section Icon gets highlighted.
Any idea how this is done? Is it by JScript/JQuery/CSS ... ???
I want to implement this feature into my site.
The problem is its on one page.
Will appreciate any help.