Hi,
No, in this version I don't yet have support for sprite changes; it's a planned implementation, but it's not yet available.
My plugin works a little differently. Different animations rendered with CSS and Pixi are configured for each weapon type, and the colors are related to the elements. If your character has a fire sword, the attack animation is a red blade; if they have a water staff, it fires a blue spell. There's a predefined animation for each weapon type. If you have some CSS knowledge or can edit the code parameters, it's possible to edit these animations.
The demo file is free; it might give you a clearer idea of what I tried to illustrate above.
Thank you very much for your interest. Feel free to ask any questions!