Comment 6 for bug 920288

@Tim, it might not be that trivial because these icons need to be tinted with the average wallpaper background colour. Rosie and Cimi have both checked the current assets that are in ubuntu and they say the assets themselves are correct. What is missing is the correct tinting of these assets. I remember that in 11.10 Jason ran out of time to do the tinting correctly, and as a quick fix just make the icon background transparent. This bug is to revisit this work and do the tinting, so that with the default wallpaper the icon exactly matches the design, and when the wallpaper changes the icon matches the new wallpaper's average backround colour.