Four colors

I thought I'd try doing a watercolor only using 4 colors...burnt sienna,burnt umber,raw sienna, and colbalt blue. With this watercolor I applied the colors wet-on-wet using my Isabey size 0 round mop brush. I'm just amazed the way this Isabey wc brush holds the color and point. Aquabee super deluxe sketch book 9 x 9, Daniel Smith watercolors.