/usr/share/texmf/tex/latex/beamer/base/themes/ is in latex-beamer 3.10-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/texmf/tex/latex/beamer/base/themes/color/
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemealbatross.sty
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemebeaver.sty
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemebeetle.sty
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemecrane.sty
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemedefault.sty
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemedolphin.sty
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemedove.sty
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemefly.sty
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemelily.sty
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemeorchid.sty
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemerose.sty
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemeseagull.sty
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemeseahorse.sty
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemesidebartab.sty
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemestructure.sty
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemewhale.sty
/usr/share/texmf/tex/latex/beamer/base/themes/color/beamercolorthemewolverine.sty
/usr/share/texmf/tex/latex/beamer/base/themes/font/
/usr/share/texmf/tex/latex/beamer/base/themes/font/beamerfontthemedefault.sty
/usr/share/texmf/tex/latex/beamer/base/themes/font/beamerfontthemeprofessionalfonts.sty
/usr/share/texmf/tex/latex/beamer/base/themes/font/beamerfontthemeserif.sty
/usr/share/texmf/tex/latex/beamer/base/themes/font/beamerfontthemestructurebold.sty
/usr/share/texmf/tex/latex/beamer/base/themes/font/beamerfontthemestructureitalicserif.sty
/usr/share/texmf/tex/latex/beamer/base/themes/font/beamerfontthemestructuresmallcapsserif.sty
/usr/share/texmf/tex/latex/beamer/base/themes/inner/
/usr/share/texmf/tex/latex/beamer/base/themes/inner/beamerinnerthemecircles.sty
/usr/share/texmf/tex/latex/beamer/base/themes/inner/beamerinnerthemedefault.sty
/usr/share/texmf/tex/latex/beamer/base/themes/inner/beamerinnerthemeinmargin.sty
/usr/share/texmf/tex/latex/beamer/base/themes/inner/beamerinnerthemerectangles.sty
/usr/share/texmf/tex/latex/beamer/base/themes/inner/beamerinnerthemerounded.sty
/usr/share/texmf/tex/latex/beamer/base/themes/outer/
/usr/share/texmf/tex/latex/beamer/base/themes/outer/beamerouterthemedefault.sty
/usr/share/texmf/tex/latex/beamer/base/themes/outer/beamerouterthemeinfolines.sty
/usr/share/texmf/tex/latex/beamer/base/themes/outer/beamerouterthememiniframes.sty
/usr/share/texmf/tex/latex/beamer/base/themes/outer/beamerouterthemeshadow.sty
/usr/share/texmf/tex/latex/beamer/base/themes/outer/beamerouterthemesidebar.sty
/usr/share/texmf/tex/latex/beamer/base/themes/outer/beamerouterthemesmoothbars.sty
/usr/share/texmf/tex/latex/beamer/base/themes/outer/beamerouterthemesmoothtree.sty
/usr/share/texmf/tex/latex/beamer/base/themes/outer/beamerouterthemesplit.sty
/usr/share/texmf/tex/latex/beamer/base/themes/outer/beamerouterthemetree.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeAnnArbor.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeAntibes.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeBergen.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeBerkeley.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeBerlin.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeBoadilla.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeCambridgeUS.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeCopenhagen.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeDarmstadt.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeDresden.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeFrankfurt.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeGoettingen.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeHannover.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeIlmenau.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeJuanLesPins.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeLuebeck.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeMadrid.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeMalmoe.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeMarburg.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeMontpellier.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemePaloAlto.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemePittsburgh.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeRochester.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeSingapore.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeSzeged.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeWarsaw.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemeboxes.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/beamerthemedefault.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/compatibility/
/usr/share/texmf/tex/latex/beamer/base/themes/theme/compatibility/beamerthemebars.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/compatibility/beamerthemeclassic.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/compatibility/beamerthemecompatibility.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/compatibility/beamerthemelined.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/compatibility/beamerthemeplain.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/compatibility/beamerthemeshadow.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/compatibility/beamerthemesidebar.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/compatibility/beamerthemesplit.sty
/usr/share/texmf/tex/latex/beamer/base/themes/theme/compatibility/beamerthemetree.sty