/usr/share/tuxpaint/fonts/ is in tuxpaint-data 1:0.9.22-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/tuxpaint/fonts/FreeMono.ttf
/usr/share/tuxpaint/fonts/FreeMonoBold.ttf
/usr/share/tuxpaint/fonts/FreeMonoBoldOblique.ttf
/usr/share/tuxpaint/fonts/FreeMonoOblique.ttf
/usr/share/tuxpaint/fonts/FreeSans.ttf
/usr/share/tuxpaint/fonts/FreeSansBold.ttf
/usr/share/tuxpaint/fonts/FreeSansBoldOblique.ttf
/usr/share/tuxpaint/fonts/FreeSansOblique.ttf
/usr/share/tuxpaint/fonts/FreeSerif.ttf
/usr/share/tuxpaint/fonts/FreeSerifBold.ttf
/usr/share/tuxpaint/fonts/FreeSerifBoldItalic.ttf
/usr/share/tuxpaint/fonts/FreeSerifItalic.ttf
/usr/share/tuxpaint/fonts/default_font.ttf
/usr/share/tuxpaint/fonts/locale/
/usr/share/tuxpaint/fonts/locale/ar.ttf
/usr/share/tuxpaint/fonts/locale/bo.ttf
/usr/share/tuxpaint/fonts/locale/el.ttf
/usr/share/tuxpaint/fonts/locale/gu.ttf
/usr/share/tuxpaint/fonts/locale/he.ttf
/usr/share/tuxpaint/fonts/locale/hi.ttf
/usr/share/tuxpaint/fonts/locale/ja.ttf
/usr/share/tuxpaint/fonts/locale/ka.ttf
/usr/share/tuxpaint/fonts/locale/ko.ttf
/usr/share/tuxpaint/fonts/locale/te.ttf
/usr/share/tuxpaint/fonts/locale/th.ttf
/usr/share/tuxpaint/fonts/locale/zh_CN.ttf
/usr/share/tuxpaint/fonts/locale/zh_TW.ttf