Characters Change Double's HP bar's border color when transmuting

[Kevin Pepino]

Basically put, each time a diamond-tier Double transmutes to a new element, the border of her healthbar changes its color to match the current element. It's a simple change, but one that I consider it helps to clarify better which element is being used, at least compared to the current method.

To put a visual example, here's a diamond Rainbow Blight on her base element.



Now this is how it would look once she switches to Air element.