When you explicitly say that you don't vote in normal elections because none of the parties are right-wing enough for you, you'll have to excuse me when I say that I don't believe you're being forthright with me.
Also, even if you want to be a bloodless centrist pursuing practical foreign policy, fighting colonialism is still a good idea because France and Britain build their strength off of it. Assisting their colonies in their liberatory struggles directly harm their ability to bring materiel to bare against us. There's no justification for not vigorously fighting it... aside from, say, thinking that the people in those colonies are inherently not worth fighting for.