Here is a full screen KDE splash screen, it picks the icon to use from your current 'go' icon. I made it with OS-K icons in mind but it is non specific.
Picture is by Matthew Green and called 'Road to somewhere'
How to Install:
1.Download & uncompress
2.Copy the folder to ~/.kde/share/apps/ksplash/Themes/
3.Choose the splash screen in you KDE control center
4.You may have to create some of those folders.