I tried putting cellophane over it, and it just made it a darker green. I put like pure blue cellophane over it too, like a deep blue, still didn't work.
And thanks for the technicalities. haha. I didn't know what the hell it was! =p
I can't figure out a way to make this thing blue! I almost need a blue lens for it, something that will filter out the green and only show the blue spectrum, but I guess if that was the case the clock would be super dim. argh, I'm going crazy here! :'(
I'm trying to find a place that would do a custom VFD screen (thanks Buurin for the update, lol) and seeing if there's a way to get a similar clock in white then put blue cellophane over it, then it would actually work. lol. Who knows.