Summary

Needed boxes to contain 12V radio remote switches. Printed in clear, with an auto-RGB LED inside that lights when switched on. 12V in/out via coaxial power connectors.

Remote switches:
Similar to: https://www.amazon.com/dp/B01A6VOH9W/ref=cm_sw_r_tw_dp_U_x_tWdgDbNFN9AZH

Coaxial power connectors:
https://www.amazon.com/gp/product/B01M1D5GIP/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B01N6MX0H5/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

Auto-RGB LED:
unknown

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/0u9zlh2oXKl