A member of the Miata.net forum with the nickname Jumperthumper created another pure cosmetic modification which gained some interest from the Miata community. I decided to check how it would look on my car, to maybe make some sort of kit for easy installation for other people. A Red LED strip can be attached to the trunk lid that will produce a glowing reflection, which looks very nice at night. I found on Amazon an LED strip with 120 LEDs/m which has the 3M backing tape. This strip is more expensive, but the adhesive side is more strong than most of the low-cost strips.
The trunk lid has several holes with rubber plugs, which makes wire routing more concealed. The original wire leads from the LED strip were replaced with black cable; 1m long with 2 pin connector at the end.
I already had a rear light harness designed for other projects, so I just added a 2 pin connector to the Parking light wires, for Plug-n-Play installation. (this harness now available from my store)
The whole setup took 15 min to install (not counting time for soldering wires). The light comes on when the running/parking lights are on.
I was able to source this LED strip directly from the manufacturer and they agree to make a custom cable for us with an attached 2 pin connector, compatible with my harness.
This kit ( LED strip, harness, and 3M primer) now available from my store.