I have Lexus style rear lights on my car which i hate

It wouldn't be so bad if they were in decent condition, but they are not. They are obviously from USA as they originally had a red indicator. But the genius who fitted them has attacked them with a screwdriver or other such precision tool via the whole for the bulb, and smashed out the red cover, but you can still see traces of it inside, then fitted an orange bulb


I tried my best to hide the look of them by tinting them, and from a distance, it doesn't look too bad. But i know what lurks beneath

And now one is cracked

So, why don't i just replace them? Because the genius who fitted them also went to the trouble of bonding them in



Here are the pics: apologies for the dirt



As you can see from the pics, they are only bonded at the top and along the edge where they meet the rear 3/4 panel.
So, have you guys any suggestions as to how i can remove these, without damaging the panels? Not worried about damaging the lights at all, obviously

thanks
