Ah great :) ! Now also people in 2e can enjoy the theme.
Original Code: (just for reference, for people wanting to compare it to the changes you made :) !
if string.match(rMessageGM.text, "%[AUTOMATIC MISS%]") then
-- it is a fumble... reset things to a fumble
rMessageGM.icon = "roll_attack_fumble";
rMessagePlayer.icon = "roll_attack_fumble";
rMessageGM.font = "attack_roll_fumble_msgfont";
rMessagePlayer.font = "attack_roll_fumble_msgfont";