add change-theme script
authorAmin Bandali <bandali@gnu.org>
Tue, 19 Oct 2021 04:36:37 +0000 (00:36 -0400)
committerAmin Bandali <bandali@gnu.org>
Tue, 19 Oct 2021 04:36:37 +0000 (00:36 -0400)
allows changing themes for future application instances as well as
currently-running ones on the fly.  xterm and emacs have been tested
and are known to work so far.


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