Wc Product Gallery will add a gallery at single product page and will show all your product images in a beautiful carousel.
so you can add more images to show your product and Wc Product Gallery will easily handle your images.
the default woocommerce light box gallery will work same as before even you have installed Wc Product Gallery and activated it.
It have settings in back-end so you can select color and display according to your theme.
please let us know if you have any query/issue via contact page.