Call mode.renderFirst after receiver.renderFirst, instead of the other way around, since the receiver draws the background over anything the mode might draw. (Currently, no modes draw anything in renderFirst.)
Call mode.renderFirst after receiver.renderFirst, instead of the other way around, since the receiver draws the background over anything the mode might draw. (Currently, no modes draw anything in renderFirst.)

sammymax/nullpomino,sammymax/nullpomino