Best way to do colours and sizes for eCommerce site

1. What is best color for online shop?
2. What are swatches in website?

What is best color for online shop?

Although white can feel cold, it's the color of purity, cleanliness, and peacefulness. It also creates a sense of space and freshness. That's why many eCommerce websites use white as a background color. Black can evoke a number of feelings and associations – both positive and negative.

What are swatches in website?

Swatches are a feature that allows customers to choose between different product options, such as color or size, right on the search results page.