Your best bet is a clear at some angles it gives the illusion of being black or smoke. Your lighting will look good too.

I don't think a smoked translucent ball was ever made, as it would sorta defeat the purpose of lighting it.
Also if you go clear you are going to have to modify how you place the lighting, if you place it at the bottom it doesn't light up very well and you will have the led glaring into your eye as its magnified through the clear ball.
I have a mod kit, that will do just that, you can install it yourself or send my your t-ball and i can install it for you. It's RGB and has a controller switch, or i can do a music reactive.
If not this route your only other option is custom, you'll have to ask around a few plactics manuf's to see if they will make one for you. Will probably be expensive.....
For the clears.....
Go
HERE, these are OEM Happs Clears.
I have generics for $35.00 shipped, same quality just not HAPPs. I have a few in my rigs, and i see no real differentation between the 2.