Die K Desktopumgebung

5.6. It is possible to change the K button of the panel to another picture?

Look for $HOME/.kde/share/apps/kpanel/pics/go.xpm and $HOME/.kde/share/apps/kpanel/pics/mini/go.xpm and replace them. Don't forget to flatten the replacements to one layer, or else you won't see anything. Create the directories if they do not already exist. Then restart kpanel.