The original image has same strange shading which might be difficult to replicate as vector. Is there a way to simulate heating steel or is a smooth gradient sufficient? The original post said "plain white" so I guess the shading is not required.
I should have looked at the forum rules first, though. Not sure threads like this are even allowed? If that's the case, then I could compress and attach as a zip like you suggested, but will wait and see what the verdict is on that score.