Champion target, assembled weird. Canadian Tire sells 'em, and they're great fun.
Carry a spray can of black, one of white, one red/yellow/orange. Cover the frame in black again when it looks shabby from hits. Cut a cardboard stencil with a circle to fit on the paddles (possibly a larger one for the centre paddle), spray white then the high contrast colour to make aiming marks. Stickers don't last.