You can easily define a other bitmap as header Image with:
!define MUI_HEADERIMAGE
!define MUI_HEADERIMAGE_BITMAP "C:\Image.bmp"
And with
!define MUI_WELCOMEFINISHPAGE_BITMAP "C:\otherimage.bmp"
!define MUI_UNWELCOMEFINISHPAGE_BITMAP "C:\otherimage.bmp"
You can change the Images on the left side of the welcome and finish page in installation and deinstallation
of course you can have two different pics for install/uninstall
😉 keep on working
hope this helps
Dave