Change items to white

Hi everyone.

I need to know how to change the monospace font color. I need it in white. Some of my webpages has it automatically in white, while others have not (like the one I attached the link to)

On this same attached link, I need to change the button color to white, too. And cart Icon in white too(some of the webpages it is in black, as I need. I need a white one for this page)

Any help is deeply appreciated.

vizniuk.com/navigation