“Oath of the Horatii” by David is the type of patriotic art that we see promoting this:

Neoclassicism stands for values such as stoicism, self-sacrifice, duty, patriotism, gravitas, action and reason. Thus in the context of a decadent France, ruled over by the Absolute Monarchy of the Bourbons, with its frivolity and absurd self-indulgences, the idealized art of classical antiquity was a perfect medium for David's message.

yellow and blue because thats what i remember, im not sure tho