How do I change the border and hover-border color of product tiles?

html .tagalys-namespace .tagalys-product-tile .product-link, html #tagalys-namespace .tagalys-product-tile .product-link {
  border-color: #CCC;
}
html .tagalys-namespace .tagalys-product-tile .product-link:hover, html #tagalys-namespace .tagalys-product-tile .product-link:hover {
  border-color: #999;
}