In the 18th century, toile patterns were floral or depicted pastoral scenes, and were colored navy, red, or black on white or cream background cotton fabric. Textile makers often lifted the patterns from book illustrations, and manufactured the fabric prints using wood blocks or copper plates with madder or indigo dye. Here's a general history of toile from Sewing Needle Work and also a more detailed article at the Quilter's Muse.
The following gown was made by Dollies' Dressmaker. I guess Chrissa here is pulling a Scarlet O'Hara, as I thought toile was usually used for room decor, but hey, it would have been expensive fabric back in the 18th century. I guess she's showing it off. The pattern is of two idyllic dancing figures, clad in classic robes.