Don't bother explaining the color temperature thing, it's an abstract and I'll go find that previous post you did, where you explained it very well. I had some stuff to add, but my wireless connectivity at home likes to go to ca-ca quite often and it hosed me by going down as I hit "send".
I'd also recommend to others to go find that posting and read it was rather well explained.
So, in a nutshell, because of the narrow bandwidth that is the nature of LED's, gels are really good for maybe knocking down intensity or clarifying the beam. That makes sense.
Please take pity on me, I'm just an audio engineer!