To me solids fall into three groups. Reads like a solid, a true solid and a textured solid. Reads like is a fabric that has a fine print you can't see unless you are looking at the fabric from a close distance, but looks like a solid from a distance. A true solid is a solid colour with no print or texture at all. Textured solids are solids with a texture such as Mode Marbles, or a sponged like look.