Doesn't the fire object from the assemble mode actually make some light?

I find that it looks neat by turning it sideways and setting its container to cylindrical, set the tip color to a dark blue/violet color and the base color to a whitish cyan - makes a cool afterburner. There's more adjustments to it, but those all depend on the look you're going for.

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Barbequed Pixels?

Your friendly neighborhood Wings3D nut.
Also feel free to browse my freebies at ShareCG.
There might be something worth downloading.