Heat Dagger Energy Color?

[Llyssa]

So, I've been playing with the heat dagger recently, and noticed that, for whatever reason, the colors on the flames it produces don't match the energy color of the dagger.

 

It's also noteworthy that the implied spread of damage from the ground strike, based on how far out the flames fan, is actually rather large compared to where actual damage is done.

 

Slightly odd.