Welcome to chaos. Daxton Bane, intergalactic man of peace at your service.
The way i understood it, if its a cosmetic thing mostly for just appearances it would be allowed. The only time a factory submission is required if it has some sort of special effect outside of what is considered the norm. Case in point, there are lightsaber cane swords as well as double blade designs, which function as 'lightsabers' but the mere difference is just the look. Hope this helps.