Even Caribbean has widescreen art available, so of course I use that. Everything was fine until I found that ALF's Resort map (turns out he uploaded it to Mod DB: https://www.moddb.co...ons/alfs-resort ). Cool map, but probably my favorite aspect about it is the custom palette.dat it includes. It turns the normal blues into bright cyans that really fits the tropical theme. Ever since, it became an ever-present component of my caribbean playthroughs, much like Mark McWane's version of Doomsday.
The problem is that it doesn't play nice with the widescreen art, at least in regards to the pistol and soak'em:

Now, I have some basic idea of what's going on here. Because it changes the blues, and the art being called on uses the old blues, it causes a conflict. What I don't quite understand is why the old blues aren't automatically converted to the new palette, like the existing frames are (the art that didn't require new sprites, such as the pistol when neutral, are converted successfully).
I'm not necessarily reporting this as a bug in eduke32 since this has been a thing ever since I discovered the new palette. However, I wish to understand what exactly is going wrong and if there is a way to fix it short of manually recoloring all the widescreen frames.
EDIT: For clarification purposes, everything I'm talking about refers to the classic renderer. I have no idea how it looks under polymost.