Some of the "Silk" icons from "Applications Bar" are pixelated

Some of the "Silk" icons (dispayed as defaut when you open the wiki) which are shown on "Applications Bar" are not very well displayed, some of them (i.e.: "More applications", "User index", "Scheduler", "Blog"). It would be great to improve it, because they are not fiting with Flamingo, which is a minimalist and very good looking skin.