just a thought, maybe the blade could be made with something like this
clear flat borosilicate glass tubing, figure a way to seal it and use like colored water inside and a flashlight in the handle to have a glow. tho it seems this (what is linked) does come in a couple colors
was searching for flat tubing thought that may be better then round tubing. and that was the first thing I saw, and as far as I went with the search, just an Idea
NOTE: this is just theory, not something I have seen done or actually have done