I need color palette advice!

I started this map a long while back to practice adding side-view elements to my maps, architecture, etc. And to try my hand at a different style of mapping: just blocking out the building shapes rather than detailing all the roof lines and landscape details like I normally would.

I am stuck on choosing colors for the map, though! I want to keep it simple and thematic: the left city is a more steampunk, mushroom punk, industrial vibe, while the left is a more solarpunk, paladin vibe. I can't find a color template that satisfies my themes and looks adequate to me.

Help! Please

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