The silver SS is, to my knowledge, originally designed as a clear SS, hence the association with Hidden... and Flashlight was a similar enough concept to share that icon.Derekku Chan wrote:
Why AREN'T hard rock/double time getting the silver S/SS? I've always wondered that...
(Also truthfully I probably would like more colors too, but it won't happen so )
In my opinion, the other reason for not giving special icons for the other mods is this: When you play a map with DT or HR, you're still playing the same game. The song is made faster or the map is made harder, but it's still played as a regular osu map. Hidden and Flashlight actually change the way that you play the game.