#5ml tubes

Winsor & Newton Cotman Watercolor Set Review – 20 Colors Tested

I cracked open the Winsor & Newton Cotman Watercolor Set on a rainy Tuesday afternoon with a fresh pad of cold-press paper and zero expectations beyond filling in my niece's coloring books. Three hours and one very blue thumb later, I had opinions. Here's my full breakdown of this 20-color beginner set and whether it belongs in your art supply drawer.