I might be misunderstand the term, well, actually both terms, but I think Aliette de Bodard‘s work is “post-colonial space opera.” de Bodard has written three stories published in Clarkesworld set in, apparently, the same universe, each using science fiction to explore the effects of colonialism.
“Immersion,” which was nominated for a Nebula this year, is my favorite. It uses augmented reality as a lens to examine cultural imperialism:
“It’s their weapon, too.” Tam pushed at the entertainment unit. “Just like their books and their holos and their live games. It’s fine for them—they put the immersers on tourist settings, they get just what they need to navigate a foreign environment from whatever idiot’s written the Rong script for that thing. But we—we worship them. We wear the immersers on Galactic all the time. We make ourselves like them, because they push, and because we’re naive enough to give in.”
“And you think you can make this better?” Quy couldn’t help it. It wasn’t that she needed to be convinced: on Prime, she’d never seen immersers. They were tourist stuff, and even while travelling from one city to another, the citizens just assumed they’d know enough to get by. But the stations, their ex-colonies, were flooded with immersers.
Tam’s eyes glinted, as savage as those of the rebels in the history holos. “If I can take them apart, I can rebuild them and disconnect the logical circuits. I can give us the language and the tools to deal with them without being swallowed by them.”
She’s written many more stories, and novels, that I haven’t read yet.