Incremental backgrounds possible?

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http://chakra-project.org – Is it possible to have a transitional background for the kdm > ksplash > desktop processes.I was thinking that if this can be done for branding logos then can it be done for backgrounds also?Maybe then the branding and background 'incremental effect' could be loaded as 1 component...Something along the lines of say a background starting in greyscale > desaturated > full colouror,for simpler, more minimal backgrounds, starting with base colour > add more detail > full detail. (HowTos)