Change color of exit icon on Shop Product Lightbox

To change color of exit icon on Shop Product lightbox

You can use this code to Custom CSS box

/* shop product x icon color */
.gallery-lightbox-close-btn-icon svg path {
stroke: red !important;
}

If you want to change Left/Right Arrows

You can use this CSS code

button.gallery-lightbox-control-btn[aria-label*="Slide"] {
color: #f1f !important;
}