As a contribution to this found parts archive, here is a detailed PDF reference for the original ANH Vader chestbox green and red buttons or lights, including their Honeywell pushbutton switch part codes, along with photos of one of my original part sets. They originally came as both a clear (or colored) cap and colored base together, but it is the base part that ended up being used on the chestbox. The cap btw is too large in case you were thinking it's a good Imperial Rank tile which are 18.2mm long whereas these bases are 25mm long. Interestingly, they came in red, yellow, green, white and amber, although I have seen blue ones as well. I also have replicas molded from originals, and based on how they play with the light, I don't think they would be as good when 3D printed, but better instead cast from molds like the originals.
https://www.mouser.com/datasheet/2/187/c30105-1815237.pdf?srsltid=AfmBOoqjTiYqBlyMt0SrqVKqnY4pZLZ2LpEZxb_1qVoxPkPtnkPbCRy3Schematics of the parts from the PDF and the codes:
The chestbox itself and the buttons as they would be seen on Vader:
Photos of one of my original part pairs. I've tried to correct for color in the photo to show the true colors most accurately.
And compared to a copy of an original box:
