Hi there,
Thanks for contacting us. Your site is really looks elegant and beautiful.
You can add this following css on child theme style.css file:
//To change the price title and color use this css
.price-title {
background-color: #faa182;
color: #211C1C;
}
//To change information box color apply this css
.page-template-page-full-width h4 {
color: #5c5f62;
}
Note: Please use child theme to add custom css , so your changes will not lost on theme update.
We looks forward for your response.
Thanks