Use a big S that blocks other stuff on the results screen for Easy.
So for this you'd need what, sixteen colors total?
Normal
HR
HD
DT
FL
HR+HD
HR+DT
HR+FL
HD+DT
HD+FL
DT+FL
HR+HD+DT
HR+HD+FL
HR+DT+FL
HD+DT+FL
HR+HD+DT+FL
Anyone wanna come up with a way to account for all those? It'd certainly take some time to learn which colors go with which, too.
Perhaps it might be easier to give qualities to the S image, like reddened for hard rock, translucent for hidden, motion blur for double time, blackened for flashlight. Then you could tell which mods it has by what effects have been applied to the S. I know two of those examples are colors, which is fine. Doing a hue and a black/white is fine. Adding more colors is what gets hairy.