I'd like to remove the rectangle that appears behind the units' portraits at the bottom of the screen. I'm not able to find the location in the code where that rectangle is defined or drawn. The reason for the removal is that the screen looks rather bare until additional characters join the party, and rpg maker's default resolution leaves the effects looking rather squished.
Picture while selecting action:

Picture during attack:

EDIT: Well I kept at it, and found a fix. In case anyone else wants to do this, by adding self.opacity = 0 in window_battlestatus.initialize the rectangle becomes invisible without ruining the gui like x = 0 y = 0 does.