I found this somewhere else and thought I'd post it here for posterity. If you're using a macro for dice rolls and want it to display, say, a natural 19 as a crit (Green number), here's the macro: /roll 1d20cs>19 ....(where crit range is any dice roll of 19 and above) If you have a modifier, put it after as usual; say +6 (This will not trigger the green critical unless the natural dice roll is 19+) /roll 1d20cs>19 + 6