1750's ... a bit of history

We are in the time of enlightment and Encyclopedie was published during this era. Encyclopédie, ou dictionnaire raisonné des sciences, des arts et des métiers (Encyclopaedia, or a Systematic Dictionary of the Sciences, Arts, and Crafts) was a general encyclopedia published in France between 1751 and 1772, with later supplements, revised editions, and translations. It had many writers, known as the Encyclopédistes. It was edited by Denis Diderot and, until 1759, co-edited by Jean le Rond d'Alembert.(wikipedia)

But it was also the time to take arts a bit lighter. It's the rococo that brought light colours and textures.