Promo/Guidance/Branding/Development/Guidelines/CIG/Default UI Artwork

Wallpaper

A default wallpaper should:

be consistent in terms of style with the other desktop artwork.
appear rather neutral in terms of taste. In other words a default wallpaper should be appropriate for both corporate and home use.
use the [official color palette].
not be distracting. This means that it shouldn't be too colorful and shades shouldn't change too rapidly. This is especially valid for the upper left area.
be designed with the [icons] and kicker in mind. Ideally a default wallpaper should show just a single color on the upper 30%, the left 30% of the screen and the kicker area. The reason is that people place their icons in these places and having a single color without any other shapes and picture elements makes it easier to recognize them. Simplicity in these areas is very important.
sizes?
license?

A default splash screen should:

be consistent in terms of style and color palette with the default wallpaper.
appear rather neutral in terms of taste. In other words a default splash screen should be appropriate for both corporate and home use.
use the [official color palette].
use icons from the [Oxygen icon theme
must NOT use icons that are associated with a particular platform or distribution (e.g. a tux icon).
sizes?
license?
templates needed