Dark themes work much better with images that have transparent background or background matching color.
See http://demo-slate.yes-cart.org/category/mice/sku/280
See http://demo-slate.yes-cart.org/category/mice/sku/280
Overview
Slate theme featuring responsive design is built on top of default theme providing customers with same experience but in different colour.
Demo store
We invite the reader to explore live demo store http://demo-slate.yes-cart.org/ that uses 'slate' theme.
Figure 1 below shows home page screenshot of demo store.
Figure 1: Category page