Quoted from hepgeek:
Has anyone used the Loop Combo plastics on the mystery lights? Any comments on quality / finish? They look a bit washed out in the photos, but nothing looks good with LED lighting in photos. I'm not a big "toys" modder, and I like that these look original and help to explain what the various mystery lights mean. Thinking about buying a set off eBay with today's bargain coupon.
I have not seen them on Addams as they are newly released...but I will vouch for the quality from accidental on Jurassic Park. They definitely look OEM/factory/professional...whatever you want to call it!
Here is a video I did on the JP ones. Just be careful with your plastics lol.
You also may get better results depending on what bulb is behind it. I also showed a few quick ones in my LED comparison video specifically with the scoops.