Quoted from Dr_Spaceman:Not that I know of, but the multipliers are indicated by the solid lit white spider. That doesn't help me remember which shot was 2x and which might have been 3x, and the lights can blink again depending on the mode or game progress. You kind of have to have a good memory on SM.
IIRC when a shot is multiplied the white arrow is lit but it is dimmer than normal. Not sure the diff between 2x and 3x though.
Parker