You are correct in that I already have a model like that. But its in the blue/grey texture type. The model however has not really changed. And yes. I definately could make flamer tanks that have more solid metallic gas canisters. That has actually been an idea that I never implemented.but has been on my mind.
I got the inspiration from C&C3. In my opinion. There's no better flame tank than that one, especially with the attack animation