You're right, I do, because blue is my favorite color. But I really saw that gradient most fitting for the flame.
You should explore reversing, inverting, and randomizing gradients more though. You can get some really cool results by doing stuff like that. That pic would almost be even more dazzling if you inverted it. Then, it would be all photo-negative looking. Gradients are VAST. Explore 'em some.
You can see the detail much better. It would also be cool to get the blue gradient, reverse it, then change to a white background. See how it looks. ---- Apo experimentation rulez.