From fa0e3540eb141f6ae5149fba837097419b0b2ef2 Mon Sep 17 00:00:00 2001
From: hikaru-y <hkrysg@gmail.com>
Date: Sun, 20 Jun 2021 01:56:30 +0900
Subject: [PATCH] Store default palette before "fusion" QStyle is applied

Once a QStyle different from the system default is applied, the system default palette can no longer be retrieved with standardPalette().
---
 qt/aqt/theme.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/qt/aqt/theme.py b/qt/aqt/theme.py
index 10970b53c..75a10e96f 100644
--- a/qt/aqt/theme.py
+++ b/qt/aqt/theme.py
@@ -35,6 +35,7 @@ class ThemeManager:
     _icon_cache_dark: Dict[str, QIcon] = {}
     _icon_size = 128
     _dark_mode_available: Optional[bool] = None
+    default_palette: Optional[QPalette] = None
 
     # Qt applies a gradient to the buttons in dark mode
     # from about #505050 to #606060.
@@ -133,6 +134,7 @@ class ThemeManager:
         return QColor(self.color(colors))
 
     def apply_style(self, app: QApplication) -> None:
+        self.default_palette = app.style().standardPalette()
         self._apply_palette(app)
         self._apply_style(app)