Change the Main Menu items' COLOR only on the home page when NOT scrolling

Question:
Changing colors of main menu items when scrolling.

Product:
Wix Studio Editor

What are you trying to achieve:
Hey, my menu is black at all time, however I need to be white only on homepage when not scrolling. then when scrolling bring it back to black. How can I make this happen?

What have you already tried:
I tried accessing the “horizentalmenu” via velo on event but won’t let me change the color.

Additional information:
[Include any other pertinent details or information that might be helpful for people to know when trying to answer your question.]

Have a read here. It describes being able to have different headers on specific pages