It does make sense. With the blue, you can see in my pic, that it doesn't extend beyond the object it's shining on. I think most of my money,so far,this year has gone in to lighting
It makes sense. Look at the light spectrum.
ROY G BIV
Red Orange Yellow Green Blue Indigo Violet
Brighest to Darkest
Just want to add in about traffic lights even though probably no one cares. Red stands out the most, and thus you have it being stop. Orange is next, and thus why no traffic light? That's because orange is for construction which makes sense because people's lives are in the balance with construction, and that's important to have a bright color. Also, orange is a little too close to red being bright. So, you go to the next color which is caution in yellow. Of course, after that you have the green for the go light. Blue is less important of a color because it's with just signs like highway, or hospital.
Highway signs above the highway when you are driving are green because I think if they were yellow, it would mean warning. They do use yellow in them when they say exit now though because it's more of a warning. If they were red, people might think stop, and yellow for caution.
For stores, what are a lot of the lit signs? A lot of them are red, and white. Also, don't forget that white is actually the brightest, but isn't really a color.