What I am trying to achieve can be seen here. http://cecil-studio.com/. As one see a Marquee at the TOP of the page with Text “PARIS. GRAPHIC DESIGN AND ART DIRECTIONS”. When you see above fold the page the FONT is in black color, as you scroll down since the MARQUEE is sticky it roll over other background images placed in below sections, you’ll notice that the FONT color changes as per color of background image so as to enable easy reading.