When I started mapping around 2018, caulk was colored magenta. Since around then it's red for me, and I find it annoying because it's not easily distinguishable from other caulk textures that appear red in the editor which makes things more confusing then they need to be. Does anyone know if this was an update, or did I do something to cause it to be this way somehow? www.dropbox.com/s/...kv/RedCaulk.jpg

Is anyone familiar enough with GTK Radiant 1.6.6 that they would know?
Edited 9 seconds after the original posting.

You can make your own editor textures. I do :) Mine are perfect for me but I reckon no one else would use them.

Edit: Now that I have looked at the screenshot, that is a missing texture. You have a config error but I'm not sure exactly where. Start GtkRadiant up and look at the console or the Settings -> Preferences.