chatgui: AccountDelegate — palette-consistent colors (light/alternateBase instead of hardcoded)

tools/chatgui/src/accountdelegate.cpp

@@ -13,9 +13,9 @@ void AccountDelegate::paint(QPainter *painter, const QStyleOptionViewItem &optio
     if (option.state & QStyle::State_Selected)
         painter->fillRect(option.rect, option.palette.highlight());
     else if (option.state & QStyle::State_MouseOver)
-        painter->fillRect(option.rect, QColor(240, 240, 240));
+        painter->fillRect(option.rect, option.palette.light());
     else
-        painter->fillRect(option.rect, option.palette.base());
+        painter->fillRect(option.rect, option.palette.alternateBase());
 
     const int margin = 4;
     const int iconSz = 24;