Welcome newbie! I wonder what manner of black blade you had in mind...one that's just black and doesn't light up? One that's the UV Purple of a Blacklight? One that lights a dim gray? I specialize in custom tinting the unlit blade, so it's an intriguing proposition. I don't think the board lets you respond yet, but by all means visit the welcome forum and introduce yourself, we can discuss your dream saber therein; I could see lighting a sunglasses-gray saber to a dim white, or even a smoking saber using the Zero Toys' Wizard Wand...we might just be SOL when it comes to a saber that literally draws in light around it though, lulz...
