I played in this game on Linux by wine-emulator and have some artifacts in menu/map/action panel. I think it depend from some features game engine. Desperado - other game this studio have similar problems. Here is example such artifacts: https//appdb.winehq.org/appimage.php?iId=15972. I think it's problem in your version of game and gog-version doesn't have this bug. But I'm not sure on 100% because can't check gog-version in windows-system.

I'm having a very similar problem I just posted in the forum about. Mine isn't purple but otherwise sounds the same as yours, everything is ultra-blurry for me and the fonts are unreadable. If I move the mouse over the buttons on the right the words become temporarily partly visible then quickly blur again with some kind of special effect. It's impossible to really start a game with this.


UPDATE: I found a solution to my problem that seems to work for this game and also for Alien Nations so I presume it'll work for other games too. While I have AMD video hardware it is possible something similar could occur on nVidia as well and they probably have a very similar setting in their driver control panel, so if anyone experiences problems of this nature it is worth trying the solution I found, which is to disable "Morphological Filtering" in a custom application profile in the video driver for the game in question. Details in the link above.