ITT: we pair wallpapers based on shared or complementary themes, colors, moods, etc.

You can either post a complete pair, or post a lone pape and ask your fellow anons to find it a partner.
Larger sets are welcome. Multi-monitor wide format (dual monitor) images are also welcome.
To maintain overall quality, please try to post at a minimum of 1920x1080.

I'll get things rolling with some >>>/out/-themed pairings. 1/2