- sync with Adwaita
https://bugzilla.gnome.org/show_bug.cgi?id=763696
5e629bc High Contrast: spinbuttons
gtk/theme/HighContrast/_common.scss | 256 ++++++++++------
gtk/theme/HighContrast/gtk-contained-inverse.css | 353 +++++++++++----------
gtk/theme/HighContrast/gtk-contained.css | 357 ++++++++++++----------
3 files changed, 555 insertions(+), 411 deletions(-)
Upstream: git.gnome.org