warn user if palette allocation was not 100% efficient
-Wno-transparency-present
warn user if the tileset did not have any of the selected transparency color
this is a common mistake if user decompiles a vanilla tileset that uses a different transparency color
user may forget to set -transparency-color which will break compilation
-Wstray-pixel
Idea from user Fexty: "Only thing I could imagine is if the algo detects a tile having only a some very few pixels of a different color, it could try without those (change them to the next closest color maybe or just transparent), and if palettes can be assigned with that change let the user know about that. I would say in a lot of cases a situation like this is some accidental miscoloring of pixels."
-Wsimilar-color-coalesce
Another idea from Fexty: "Also one thing I think could be useful is to allow the user to specify a threshold at which "similar" colors get collapsed together."
Describe the feature
-Wpalette-alloc-efficiency-Wno-transparency-present-transparency-colorwhich will break compilation-Wstray-pixel-Wsimilar-color-coalesce