See, I would think that, but I was spoiled as a kid with possibly the most badass invention ever.
There was a company called LightTech Industries that used to make electroluminescent prop lightsabers. They had custom blade colors (Even purple!), were fully functional (I only ever heard of one being broken
once), and you could either buy a premade hilt, or you could order a barebones kit, and customize your own.
They' re still around, but sadly they no longer make lightsabers.

Although, if you want to see what the blades used to look like,
their new site' s currently selling the lightup umbrellas from Bladerunner!