A downloadable tool for Windows, macOS, and Linux
PaletteSwapper is a small tool for Unity. I made PaletteSwapper in a fairly short amount of time to solve some context-switching slowdowns in my own personal Game Jam process.
If you find yourself working primarily in Unity but still aiming to do some minor color tweaks on low-fidelity artwork, this tool might help you as well. For people making their own tools, it also presents a fairly basic starting point for loading, manipulating and exporting png files from the Unity Editor.
See README.md on github