I am using a theme called boost with an add on to display colour variants. With this add on the products with colour variants have scrolling arrows for the thumbnails which looks great. Unfortunately the products that do not have colour variants do not which makes the product page look untidy. Is there a way to add them in to all product pages? My JS/CSS/HTML knowledge is limited.
On the product pages that have a colour variant the thumbnails have a scrolling arrow.
The products that do not have a colour variant do not.