Hello L.Cini,
You may have to provide a link to the site / layout you mean to get a definate answer. But this is how I worked my way around this the other day.
Copy and paste this into the bottom of your themes style.css file to override any woocommerce styles:
.woocommerce ul.products li.product .price,
.woocommerce-page ul.products li.product .price {
text-align: center;
color: #fff; /* This is what you MAY want to change color */
font-weight: 400;
font-size: 2em;
}
EDIT
If you are trying to change the color of the price of the actual single product view page then this is probably the code you are looking for:
.woocommerce div.product span.price, .woocommerce div.product p.price, .woocommerce #content div.product span.price, .woocommerce #content div.product p.price, .woocommerce-page div.product span.price, .woocommerce-page div.product p.price, .woocommerce-page #content div.product span.price, .woocommerce-page #content div.product p.price {
color: #000; /* Change this */
font-size: 1.25em;
text-align: center;
}
Thanks