Hello, Constance,
The most useful umber paint ever is Rublev’s French Umber. It came in the mail at the perfect time because I was trying to depict a golden brown leather couch and needed a shadow glaze color that wouldn’t eradicate all the texture I’d already applied. This French Umber made PERFECT shadows, so rich, yet transparent. It also accentuated the cracks in the leather and made it look even more realistic. The handling of this paint is so incredible, blending from shadow into light with no harsh edges, no struggling. And Rublev’s French Sienna handles exactly the same way, except the color is a bit greener and lighter, so it depends on what you need it for. Both pigments provide beautiful shadows and glazes that blend seamlessly toward the light. These two have become my miracle paint colors that I could not live without–I just didn’t know it until I got them. Hope this helps you.