Look, when you're dealing with film production (and this is true for video as well), certain lighting setups, no matter what you do, are going to make colors look slightly off. That's what color correction, or color grading, is for. Every film goes through a color grading process before the master print or digital copy or whatever is made. Here's how that works.
The director, cinematographer, and a technician (the actual title depends on if you're doing a digital intermediate, film answer print, or something else) all sit down and watch the film. As they go through, they make adjustments to the color so each shot matches every other shot. Then they go through again ... and again ... and again ... until the director and cinematographer are certain that the colors are right. If there's a scene that's particularly troublesome, they'll go through it in more detail.
The problem here? Colors of certain individual things (like the lights you mentioned) aren't paid attention to. If the color of one shot looks like it matches the color of another, but the button's green in one and blue in another, who cares? If fixing that means throwing the color of the rest of the shot off, why does it matter? It's not distracting. I've certainly never noticed this, and if I did I wouldn't give two shits about it. Sure, nowadays you can isolate that part of the frame and fix it, but why so much work over a stupid fucking button?
The vast majority of people don't notice continuity errors like this in movies, and if something that small and insignificant hampers your enjoyment of the film that much ... I don't really know what to say.