Learn all you need to know about mixing shades of red🎨 Although you can buy a lot of different kinds of red colors, it is not the most cost effective… As you will not be able to find all the shades of red you will need from the shelves of an art store. So, it is important to learn how to mix different shades of red yourself when painting. Let’s get started with shades of red – beginning with mixing dark red colors!