I understand that to be the result of the shaders Bioware was using, and to be intentional behavior. I believe those panels are meant to be reflective surfaces, hence the bouncing light at different angles. A quick and simple way to remove them would be a retexture mod that does not contain those reflective panels. I know the Ebon Hawk textures in the KOTOR 2 Unlimited World Texture Mod do not contain those panels. It was made for TSL, but like most texture mods will work for both games.