Hi, please guide me how to change font color and button color?

I manage to change a few with CSS but some still appear to be in grey

and the button in orange

I want to change the font to white and the button to blue

hi, i have tried the below still unable to remove the overlay and make it become white

please help

#main-header {	
	background: none !important;// this is to change your header color
}

#browse-section {	
	background: #003a91;// this is to change your header color
}

#navigation-wrapper,
#navigation-wrapper:before {
    background: none;
}

#overlay {
	background: none;
}

.page-header-module:before {
    background: none !important;
}

.bg-dark-30:before {
    background: transparent !important;
}