>>9678587If I had to guess they probably wanted to make something like the g2 swords with the red flame and silver, perhaps even marbling the silver plastic with red to give that effect. We see that on weapons a bit later on in the series, maybe they didn't have the materials to do it back then. Who's to say?
Perhaps I'm over thinking this but it does make me wonder if tahu's swords like this are meant to represent actual metal blades, or a blade made out of a literal flame (like hordika vakama's)?