Slow visual effect

[Tiber]

This is just a minor thing really, but it kind of bothers me that in tiles, there's no indication that a monster's been slowed. Between the fact that there's no icon and the "no longer moving slowly" text isn't considered important, it can be easy to miss the fact that a monster's returned to normal speed. If just about every other status effect shows an icon above the monster's head, why shouldn't slow?

[TehDruid]

You can add this line to your init.txt file

force_more_message = is no longer moving slowly

So when this text appears on screen, you get a --more-- prompt.

But a visual effect would be nice, I agree.

[Tiber]

Force more is a little much. After a little experimenting, adding either

msc = $warning:no longer moving slowly
msc = $danger:no longer moving slowly

to messages.txt works better, though I'd still like the icon.