As a celebration of light and air, sunrooms often impart a crispness of character. Toile, with its highly figured forms, may not seem too likely a companion for this clean room. But toile's presence becomes a plus when used with some restraint.
Tip: Leave the windows bare to bring in the sunroom's light, then upholster a comfy circle of seating in a single toile pattern. When it's not competing with the light and the views, toile adds elements of coziness and visual interest that make the sunroom more pleasing. To keep the look clean and not confusing, don't include any other patterns in the design.