indicator icon highlights

[Taylor]

Binary package hint: indicator-application

At least on the Ambiance theme--
The Rhythmbox indicator, when playing, turns a bright white.
The Message indicator, when there is news, turns a bright white.
The Transmission/Sound indicators, on the other hand, are always white.

See attachment for example (in this instance, Rhythmbox is playing).

This seems awfully inconsistent, and has caused me to look there a few times expecting something, when it's just the normal situation. I have a couple suggestions for this:

1) The Transmission icon should be highlighted (that is, a bright white, as it currently stands) when it is actively downloading/seeding. When it is NOT, it should be the faded gray color. This way, you can tell in a glance if there is activity going on. Perhaps if this could be customized, you could set a threshold the rates would have to pass to highlight the icon (eg, only highlight if it passes 10kb/s).

2) The Sound indicator could highlight whenever there is sound playing, though that could wind up very distracting. Maybe if there is no sound for a certain period of time, dim the icon? Or simply when it is muted, perhaps?

[Aurélien Gâteau (agateau)]

Latest sound indicator turns red when sound is played while muted. This fixes point #2.