I ordered the color theory six pack of Richeson casein, even though it included orange and violet, two colors I can mix. The other four colors made the price a bargain, since purchasing each tube individually would run nearly double the cost. Those four colors are Shiva phthalo green, ultramarine blue, cad yellow, and rose red.
The wonder of mixing greens! Plus, my all-time favorite color is probably ultramarine blue. So, now I have two blues, yellows, and reds. Those, plus white, black, orange, and violet, will keep me happy for a long time.
Here’s an older journal page with the original James Gurney six pack. You can see how many shades of green I achieved with all variations of yellow ochre, cobalt blue, raw umber, and white.
This is a barn I’ve painted in watercolor twice before. The beautiful, old silo has been removed since the last one.