fix qt5: setBackgroundColor

gui/qt/address_list.py

@@ -95,9 +95,9 @@ class AddressList(MyTreeWidget):
                     address_item.setData(0, Qt.UserRole, address)
                     address_item.setData(0, Qt.UserRole+1, True) # label can be edited
                     if self.wallet.is_frozen(address):
-                        address_item.setBackgroundColor(0, QColor('lightblue'))
+                        address_item.setBackground(0, QColor('lightblue'))
                     if self.wallet.is_beyond_limit(address, is_change):
-                        address_item.setBackgroundColor(0, QColor('red'))
+                        address_item.setBackground(0, QColor('red'))
                     if is_used:
                         if not used_flag:
                             seq_item.insertChild(0, used_item)

gui/qt/utxo_list.py

@@ -53,7 +53,7 @@ class UTXOList(MyTreeWidget):
             utxo_item.setFont(4, QFont(MONOSPACE_FONT))
             utxo_item.setData(0, Qt.UserRole, name)
             if self.wallet.is_frozen(address):
-                utxo_item.setBackgroundColor(0, QColor('lightblue'))
+                utxo_item.setBackground(0, QColor('lightblue'))
             self.addChild(utxo_item)
 
     def create_menu(self, position):