Are rich earthy tones part of the rustic design color palette?

Rich earthy tones are indeed part of a rustic color palette, if you are thinking of African or Asian country looks. However, rustic can also mean a lighter color like lime wash, or pale sandy colors. Before you choose your wall paint, consider what color your furnishings and fabrics will be, to avoid a dark and cluttered look. Rustic earthy tones can be very appealing in soft furnishings like quilts and curtains. If you paint the walls a solid, warm color, like amber or chocolate, then blend your furnishings in with a lighter tone.