This makes a lot of sense, although for me the color of the warning is irrelevant in this application,
where merely having a certain light turned on should indicate to the user a serious problem. And if that warning light turned on, it means that somehow I missed what one of my gauges was already telling me. I like the red LEDs because they are brighter than the boring stock green that just seems dull but don't blind me like I think white/blue LEDs would ( I really should test that theory myself because obviously people run white leds and like them, but their pictures always seem too bright to me).
Would it be feasible for you to offer a colorless gauge face so the end user would be able to pick their color with backlights? You could still set the color of the indicator lights on the face, but this way the gauges themselves are lit in the color of the end users choice?
Ok just went back and re-read some of your posts. You said you can have the color set when you print the faces, or by backlight color, but you prefer to set it with printing. I'm curious why? It seems to me that allowing the end user to just pick their own backlight color would allow more flexibility to the end user while you only have to produce one product?
Sorry for the long post, and I hope you don't take any of this negatively. It looks like you are producing a high quality product and taking your time to make sure you get it right, which is great. Thanks for taking the time to answer the questions and comments people have had