Recently I asked a question about when the color red became associated with Socialism/Communism in this thread. https://www.reddit.com/r/AskHistorians/comments/3pviq7/when_did_the_color_red_become_associated_with/
Now I would like to find out when and how other colors became associated with different political ideologies.
When and why did Blue become associated with Conservative movements? Why is black associated with both anarchism and fascism? Why is white associated with both peace/surrender and monarchism? Why is purple currently associated with Euro-skepticism? Has it had other associations in the past? Why is orange associated with Christian-Democracy movements? And how did it become a color of anti-Russian solidarity in eastern Europe?
I would like to know these and any other associations between colors and political ideology, except for Green because that is kind of obvious.
The answer you got in the other thread is somewhat incorrect. The red flag was used after martial law was imposed, and was indeed an order to disperse, as per the law of October 21 1789. The idea of popular sovereignty that was in vogue at the time said that the people is always the rightful ruler of the country, regardless of government. This meant that in case of a conflict between the people and the government, it was the government that was rebelling against the people, and not the other way around. The red flag means the people is declaring martial law against the government to put a stop to its rebellion. It was first used during the revolution of August 10 1792, but it had been an idea since at least a few months before that.
After that, it doesn't play much of a part in the political symbolism of the revolution. It was still primarily associated with the Champs de Mars massacre, and was seen as a potential royalist symbol. When one was confiscated as such in January 1793, the Paris Commune debated what to do with it, and after stomping on it a bit, they decided to send it to the prosecutor who would write an order for the executioner to have it burned in the place de Grève, which was the normal spot for executions at the time. It would then reappear during the 19th century. Interestingly, the word "red" was applied to revolutionaries during the capital R Revolution, implying bloodthirst, before the left started using the color for themselves. I wonder if this association is part of the reason why the color became more than just what was on the flag.
Louise Michel explained the anarchist flag a bit during her trial in 1883, after a protest that escalated to looting bakers' shops.
Of course, monsieur l'avocat général, you find it strange that a woman would dare take up the defense of the black flag. Why have we held the manifestation under the black flag? Because the black flag is the flag of strikes, and because it means that the workers have no bread. If our manifestation had not been meant to be peaceful, we would have taken up the red flag: it is currently nailed to the Père Lachaise cemetery, above the graves of our dead [referring to the Paris Commune]. When we raise it, we will be able to defend it.
She's also often quoted as saying that the black flag symbolizes "grief for our dead, and for our illusions". I haven't been able to find any context for that quote, though.
(I'll have to leave the other colors for someone else)