Change menu Font color when scrolling on White page

Hi…I want to menu items font color to be changed when it is displayed on white page.
Now, I am using white font color to menu items but when i scrolled on page it is not displaying .
So, I want to change color particularly when It is displayed on white page .
This is my website http://onlineshoppyjunction.com/

Hello there,

Please share the link to one of you white pages, so I can have a look what’s exactly happening in there. Perhaps I could suggest some piece of CSS code for the solution.

Regards,
Kharis

hi…this is the link http://onlineshoppyjunction.com/air-conditioners/
when u scroll the page the menu comes to the top side of the page . It is just showing products in menu bar and others are not visible . It is appearing for just a second. I want to display menu items in the page .