Final answer:
There's no direct connection between the brownstones in Back Bay Boston and de Botton, yet they visually represent urban design and architecture similar to themes in the City Beautiful movement and the vibrant urban art by Derain and Estes.
Step-by-step explanation:
The colorful brick brownstones in Back Bay Boston do not directly depict any concept related to de Botton, as the question seems to be incomplete or lacking context. However, given the information provided, these brownstones can visually depict topics related to urban design, architecture, and the evolution of city aesthetics.
This is reminiscent of the City Beautiful movement symbolized by Burnham's vision for Chicago, as well as the iconic works of artists like Andre Derain and Richard Estes who have depicted the vibrancy of cityscapes through their art.
Derain's use of bold colors and heavy lines in his London street scenes and Estes’ photorealistic depiction of reflections in New York offer urban visual culture that can be analogously appreciated in the brownstone facades of Back Bay Boston.