Diffuser for LED light strip in Lulzbot 5mm channel slot

The first stick-on LED light strip I hooked up required a 12V supply and it was too wide to fit in the channel slot. It was blinding bright and I cut it back on the far side so it didn't blast the PI camera. I found a 5mm wide by 90cm long USB powered strip that fits the slot and is just the right length but it also was too bright on the eyes so I printed a diffuser to soften the light and keep the light strip in the slot.

LED Light Strip $4: https://www.fasttech.com/p/6978101

I cut the