After upgrading from Devuan Jessie to Devuan Ascii, I found that some
packages were not properly upgraded because of wrong version numbers.
Example: desktop-base is version 1:0.99 in ascii, but had a higher
version number in Jessie before, so the dist-upgrade kept the Jessie
version.

I cleaned those packages with synaptic, downgraded such packages to the
"testing" version, or removed and reinstalled these, where a downgrade
was not possible because of dependencies.

I now have a clean ascii install without orphaned packages. But now I'm
missing some Devuan theme files, like grub oder slim theme. Which
package contains the Devuan theme files in ascii?

Jochen