Custom headlight parts?

I'm sure this has been mentioned but I haven't found any links on here.
Im thinking about adding some products from Diode Dynamics into my headlights but only want to do the job once. While I'm in there I'll be painting and changing anything I can. I seen somewhere online before that different internal parts were being sold like the turn lens for example. I seen white lenses, smoked, ones that had writing in them etc. Same with the projector.
Now that I'm looking for these parts, I csnt find them.
Anybody know where to locate these?

Thanks in advance!

 

The Retrofit Source (TRS):
https://www.theretrofitsource.com/bi-xenon-lexus-rx350?quantity=1