Originally written by @xEvilReeperx, this was adopted by @TheRagingIrishman (thread here): https://forum.kerbalspaceprogram.com/index.php?/topic/164158-13) Idle for 3 years, and still without a UI (it was manual editing of a config file), I've decided to adopt this.   No longer do you have to keep the same boring NavBall texture. You can now change it to any texture you please through this simple plugin.  Also, you can have different NavBall textures in IVA.