anyone taken apart the tail lights? Options

[match220]

I'm cutting into the tails to make my custom LED light boards that I'll be replacing the stock lights with. I was wondering if anyone has taken the lens off of the lights? I see some clips that seem to have glue under them. I kinda want to sand down the inside of the lens so it's flat and then polish it so it's clear. But I don't know if it will lose the red tint, and I don't know how thin it would be after I sanded it flat.

[match220]

I finally got up the nerve to put it in the oven. I only had it in for 5 mins at a time and I would take it out and pry. I decided to change my plans a little bit. I'm putting in yellow LEDs for the turn signals and taking out the yellow diffuser. I'm also taking out the white diffuser for the back up lights. I kinda chipped the bottom of the light even though I was being careful. It's ok though, it's small enough, and I can use super glue to put it back, it's better than not having it on. I'm borrowing a dremel from my friend when he gets off work today and I'm gonna polish the red diffuser to a clear red. I already did some of it with sandpaper and polishing compound (160 grit, to 320, to 1000, to 2000, then polish) and I can read words through it, but it still diffuses a little, so I'm doing the rest with a dremel.