If you, like me, find it frustrating that memorised (visited but not currently visible) area is now brown (Brown!? What a ridicu… unconventional choice of colour…), and if you, like me, dislike that, I’ve made a quick and dirty patch to change that.
This patch changes low-light tiles from being black-n-white to coloured-but-darker, and turns visited-but-not-visible (memorised) tiles to be black-n-white instead. I don’t have much time nor knowledge of C++ to make a proper mod and/or PR, and it is applicable for tileset build only.
I usually build my version of a game following this instruction: https://www.reddit.com/r/cataclysmdda/comments/5d7d0f/macos_compiling_a_bleedingedge_sensibly/
Your steps may vary. In any case, if you wish to apply the patch, it should be done between steps 4 and 5:
4.1. In terminal, go to directory where you’ve cloned the sources to (ex.: cd /Applications/CataclysmBuild)
4.2. Save content of liked paste as, for example, “sepia-looks-awful.patch” in the abovementioned directory.
4.3. Type “git apply sepia-looks-awful.patch”
Proceed with step 5.
Before this sepia thing is fixed/updated in any way, feel free to patch the game with this. I hope this hack will become obsolete as soon as possible.