…at other times it might not be so. The example of the latter is IMHO the abrt icon. Originally it was something like this:
and now it looks like this:
What I'm getting at, you might ask. Well, the new icon obviously looks much better and more polished but has one serious problem – I have not the slightest idea what the hell does it mean. Not to talk about the tiny fact that e.g. when it appears in my [bottom] panel (which is transparent and bellow it is F15's default background) it looks like nothing more than a strange 'A'. You know, when the old red siren with exclamation mark appeared everyone could tell that something went wrong, now he'll be just confused with what the strange 'A' means.
On a side note – almost all these GNOME3 greyscale icons are IMHO either ugly (good example of this is the new input-method sys-tray icon) or unusable with any other background than what they were designed for. Please, I want my colourful icons in systray in XFCE back, tell me what to do.
On another side note – if I find the time, I'll write a, hopefully short, critique on Gnome 3 default GTK theme Adwaitha which I think has great albeit wasted potential drown in inconsistency (like some widgets are designed very nicely with evidently lots of effort being put into them while others look like half-finished lets-put-something-plain-and-suggestive-here-and-maybe-improve-it-later kind of designs).